Answer-How is E related to X?

Question

How is E related to X?

Study the following data carefully and answer the questions accordingly. There are seven members A, Z, C, Y, E, X and G in a family of three-generation and either both or none of the parents are alive. Z is the son of G. A is the sister in law of
X. A has no siblings. G is the mother of
X. E has two children. C is the nephew of
X. Y is the son of
A.

A Sister

B Aunt

C Father

D Sister -in-law

E Grandfather