there’s also D
D: 4m on top and 4m on the side

B hope this helped have a nice day! =D
Oh yes 4x5 is another answer so yep god I forgot that sorry!
Answer:
A and B.
Step-by-step explanation:
To find the area, you need to multiply the length and width.
A = L x W
5 x 4 = 20
10 x 2 = 20