Doubt from thermodynamics

2 is the correct option...but going by equation doesn't seem so...:sweat_smile:
pls tell where have I missed out..

Bro in isothermal process ΔT=0 means ΔU=0 this implies that Q=W also here in expansion W>0 so heat also be positive answers should be both A and B

came in JEE Mains test bro..ek hi correct hai..

Bro due to sign both A and B are the answers
@pushkar_2020 A is incorrect