UPSC Civil Services 2020 Prelims General Studies Paper II

Two Statements S1 and S2 are given below followed by a Question:
S1: n is a prime number.
S2 : n leaves a remainder of 1 when divided by 4 .
Question:
If n is a unique natural number between 10 and 20 , then what is n?
Which one of the following is correct in respect of the above Statements and the Question?