Provide an Appropriate Response

Multiple Choice

Provide an appropriate response.
-One of the following is false; indicate by letter which one:

A) {4} ⊂ {3,4,5,6}
B) 4 ∈{3,4,5,6}
C) 4 ⊂ {3,4,5,6}
D) 5 ∈ {3,4,5,6}