The correct option is B B earns more profit than A.
Cost price of A = Rs. 8000
A sold at a profit of 20%, so S.P of A = (120100) × Rs. 8000
= Rs. 9600
Profit of A = Rs. (9600 - 8000) = Rs. 1600
S.P of A = C.P of B = Rs. 9600
S.P of B = (120100) × Rs. 9600 = Rs. 11520
Profit of B = Rs. (11520 - 9600)
= Rs. 1920
Hence, B earns more profit than A.