Implement the following Python

1. Reflexive(L, S)

Input: a lists of pairs, L, and the set S over which the relation is defined. Interpreting the input as a binary relation, return True if it is reflexive and False otherwise.

EX: Reflexive(["a","b"],[["a","a"],["b","c"]]) should be true

2. Transitive(L)

Input: a lists of pairs, L. Interpreting the input as a binary relation, return True if it is transitive and False otherwise.

EX: Transitive([["a","b"],["b","c"],["a","c"]]) should be true