1 if n is odd n if b 1 if n is even n then (a) both (b,) andb are convergent (b) both (b) andb are divergent (c) (b.) is convergent but b is not convergent. (d)

1 if n is odd n If b 1 if n is even n Then (A) Both (b,) andb are convergent (B) Both (b) andb are divergent (C) (b.) is convergent but b is not convergent. (D) 2b is convergent but (a,) is convergent