Decide Whether $\subset$ $\subseteq$ , Both, or Neither Can Be Placed in the Blank

Multiple Choice

Decide whether $\subset$ , $\subseteq$ , both, or neither can be placed in the blank to make a true statement.
- $\varnothing \ldots \{ 7,15,24,34 \}$

A) Neither
B) $\subset$
C) $\subseteq$
D) Both $\subset$ and $\subseteq$