If a and b are both even numbers, which of the following COULD be odd integer?

A (a+1)2 + (b+1)2

B [(a+1)×(b+1)]-1

C (a+1)/(b+1)

D None of these

Correct Answer: Option C

if a is even, a+1 will be odd

same way, b+1 will be odd too

only Odd multiplied by odd generated an odd number.

example 7*9 = 63