`Z= X +Y` where `X` and `Y` are two prime numbers. Then which of the following statements is/are true?
(i) Unit's digit of `Z` cannot be `0`
(ii) Unit's digit of `Z` cannot be `8`
(iii) `Z` cannot be a prime number

Options

A. (i)
B. (ii)
C. (iii)
D. None of these

Answer

D