The natural numbers ware not sufficient to deal with various equations that mathematicians encountered so some new sets of numbers were defined
Ehole numbers (W) = `{0,1,2,3,4,……….}`
Integers (Z or I) `= (……, -3,-2,-1,1,0,2,3,4,……}`
Even integers :- Intigers divisible by 2, they are expressed as `2n n in Z.`
odd Integers :- Integers not divisible by 2, they are expressed as `2n+1or 2n-1,ninZ.`
Difference of squarees of two odd integeers is always divisible by

Options

A. 3
B. 5
C. 16
D. 8