(Choose 1 answer)
(See picture)
Find a recursive relation for the sequence \{a_{n}=n^{2}-n+1\} .
A. (ii)
B. None of the other choices is correct
C. (iv)
D. (i)
E. (iii)
(i) a_{1}=1, a_{n+1}=a_{n}+2n+1 n>1
(ii) a_{1}=1 , a_{n+1}=a_{n}+2n , n>1
(iii) a_{1}=1 , a_{n+1}=a_{n}+2n-1. n>1
(iv a_{1}=1 , a_{n+1}=a_{n}+2n-2, n>1
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