Please help asap :)

Susan wants to make 2 square flags to sell at a crafts fair. The fabric she wants to buy is 4 meters wide. She doesn't want any fabric left over. what equation will help susan solve her problem?

let x= the length of one side of the flag.


A: 2x2=4x2

B: 2x^2=4x

C: 8+2x=2(4x)

D: 4x^2-2x=0