If d is a positive integer greater than 1, what is the sum of the multiples of d from d to d^2, inclusive?	Choose the correct option
A) d(d + 1)(d-1)
B) d^2(d + 1)/2
C) d^2(d-1)
D) (x^3 + 2x)/2
E) x(x-1)^2
Ans :- B=d^2(d + 1)/2   I substituted 3 in all answer choices.   Option B and C were both satisfying the condition.   So i substituted 4 instead of 3 in all answer choices,   Only d^2(d + 1)/2 option satisfied.
<result>B</result>
If d is a positive integer greater than 1, what is the sum of the multiples of d from d to d^2, inclusive?