A.the vapour pressure of A is less than the vapour pressure of B
B.the vapour pressure of A is more than the vapour pressure of B
C.the vapour pressure of A is equal to 1 atm
D.the vapour pressure of A is equal to the vapour pressure of B
A.the vapour pressure of A is less than the vapour pressure of B
B.the vapour pressure of A is more than the vapour pressure of B
C.the vapour pressure of A is equal to 1 atm
D.the vapour pressure of A is equal to the vapour pressure of B