Statement I The variance of first n even natural numbers is n2 -1/4
Statement II The sum of first n natural numbers is n(n+ 1)/2 and the sum of squares of first n natural numbers is n (n+1) (2n+1)/6
(a) Statement I is true, Statement II is true; Statement II is a correct explanation for Statement I
(b) Statement I is true, Statement II is true; Statement Il is not a correct explanation for Statement I
(c) Statement I is true, Statement II is false
(d) Statement I is false, Statement II is true
