If the sum of n terms of an A.P is 4n^2 + 5n, then common difference is
If the sum of n terms of an A.P is 4n2 + 5n, then common difference is
A) 8
B) 0
C) 4
D) 6
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If the sum of n terms of an A.P is 4n2 + 5n, then common difference is
A) 8
B) 0
C) 4
D) 6