Refer to the Normal-Form Game of Price Competition Shown Below

Refer to the normal-form game of price competition shown below. $\begin{array}{l}\quad\quad\quad\quad\quad\quad\text { Firm B}\\\text { Firm A}\begin{array}{|l|l|l|} \hline & \text { C } & \text { D }\\\hline & & \\ \text { A } & 0,7 & 5,2\\\hline & & \\\text { B } & 5,1 & 0,8 \\\hline\end{array}\end{array}$ Which of the following represents firm A's full strategy space?

A) {A, C}
B) {A, B}
C) {(A, C) , (A, D) , (B, C) , (B, D) }
D) {C, D}