Assertion (A) The O-O bond length in `H_(2)O_(2)` is shorter than that in `O_(2)`.
Reason (R ) `H_(2)O_(2)` is ionic compound.
A. Both A and R true and R is the correct explanation of A
B. Both A and R true and R is not a correct explanation of A
C. A is true but R is false
D. A is false but R is true