Two Candidates for a Sample Space $S_{1}$ And $S_{2}$ , Are Proposed $S_{1}=\{H H, H T, T H, T T\}$

Multiple Choice

Two candidates for a sample space, $S_{1}$ and $S_{2}$ , are proposed. $S_{1}=\{H H, H T, T H, T T\}$ , and $\mathrm{S}_{2}=\{\mathrm{HH}, \mathrm{TT}$ , one $\mathrm{H}$ and one $\mathrm{T}\}$ . Is $\mathrm{S}_{1}$ acceptable? Is $\mathrm{S}_{2}$ acceptable?

A) Both $S_{1}$ and $S_{2}$ are acceptable.
B) Only $S_{1}$ is acceptable.
C) Neither $S_{1}$ nor $S_{2}$ is acceptable.
D) Only $S_{2}$ is acceptable.