In an AP of n terms if the last term is negative of the first term then the sum of n terms is?? ?

In an AP of n terms if the last term is negative of the first term the

1.	In an AP of n terms if the last term is negative of the first term then the sum of n terms is?? ?
Answer» Please give the solution.. Ggdyh Options are.1.n/22.-n3 zero4.n