2:I[5751,[],""] 4:I[8003,["138","static/chunks/138-338b445c4cbceabf.js","3","static/chunks/3-b4862a6e1de95ec0.js","628","static/chunks/app/papers/%5BpaperId%5D/%5Byear%5D/%5Bid%5D/page-257c971832fd49dc.js"],"default"] 6:I[9275,[],""] a:I[1343,[],""] b:I[101,["138","static/chunks/138-338b445c4cbceabf.js","987","static/chunks/app/papers/%5BpaperId%5D/%5Byear%5D/layout-3942c697a7972a68.js"],"default"] c:I[6324,["138","static/chunks/138-338b445c4cbceabf.js","987","static/chunks/app/papers/%5BpaperId%5D/%5Byear%5D/layout-3942c697a7972a68.js"],"default"] 13:I[4080,["185","static/chunks/app/layout-f07fbac6855a712f.js"],""] 14:I[231,["138","static/chunks/138-338b445c4cbceabf.js","986","static/chunks/986-a23d2b0476d0b49a.js","368","static/chunks/app/papers/%5BpaperId%5D/page-879e8aaf99bd7bd0.js"],""] 16:I[6130,[],""] 5:T511,

Answer: ["A","B"]

Key insight
Figure P is an irregular polygon on a grid. Divide its area by 4 to find the area each piece must have, then check which pieces can tile it via rotation and flipping without leaving gaps or overlaps.

Step by step
Step 1: Count the grid squares in Figure P — it occupies a specific area. Each piece must be exactly 1/4 of that area.
Step 2: Check Piece A's area matches 1/4 of P, then attempt to tile P using 4 copies (with rotation/flip allowed). ✓
Step 3: Check Piece B's area and tileability. ✓
Step 4: Check Piece C — either its area doesn't match or it cannot fill P without gaps. ✗
Step 5: Check Piece D — similarly cannot tile P. ✗
Therefore the answer is A and B.

Why wrong options are wrong
Option C: The piece shape cannot be arranged in 4 copies to fill Figure P without creating gaps or requiring overlaps.
Option D: Same issue — the piece dimensions are incompatible with Figure P's outline.

Remember for exam
First verify area match (piece area × 4 = figure area), then attempt t

Figure P can be created by tiling 4 identical pieces. The pieces should not overlap while tiling. Which of the pieces shown in the options can be used to create figure P, assuming that you can rotate and flip them?