In a compound of molecular formula `A_(m)B_(n)`:
A. number of equivalents of A,B and `A_(m)B_(n)` are same
B. number of moles of A,B and `A_(m) B_(n)` are same
C. `mxx` moles of `A=nxx` moles of `B=(m+n)xx` moles of `A_(m)B_(n)`
D. `nxx` moles of `A=mxx` moles of `B=(m+n)xx` moles of `A_(m)B_(n)`