In tissue from the intestinal epithelium of a frog, the following proportions of cells were found at each stage of the cell cycle: $$\begin{array} { | l | c | } \hline \text { Stage } & \text { Prop ortion of Cells } \\\hline \text { Interphase } & 0.90 \\\hline \text { Prophase } & 0.04 \\\hline \text { Prometaphase } & 0.02 \\\text { Metaphase } & 0.01 \\\text { Anaphase } & 0.02 \\\text { Telophase } & 0.01\end{array}$$ If the entire cell cycle in frog epithelium cells requires 20 hours for completion, what is the average duration of each stage?

A) 18 hours for interphase, 0.4 hour for prophase, 0.2 hour for prometaphase, 0.2 hour for metaphase, 0.2 hour for anaphase, 0.4 hour for telophase
B) 1.8 hours for interphase, 0.8 hour for prophase, 0.2 hour for prometaphase, 0.2 hour for metaphase, 0.2 hour for anaphase, 0.8 hour for telophase
C) 18 hours for interphase, 0.8 hour for prophase, 0.4 hour for prometaphase, 0.2 hour for metaphase, 0.4 hour for anaphase, 0.2 hour for telophase
D) 9 hours for interphase, 0.8 hour for prophase, 0.2 hour for prometaphase, 0.2 hour for metaphase, 0.6 hour for anaphase, 0.4 hour for telophase
E) 18 hours for interphase, 0.8 hour for prophase, 0.6 hour for prometaphase, 0.2 hour for metaphase, 0.2 hour for anaphase, 0.8 hour for telophase