Refer to the Figure

Refer to the figure.
These results show that

A) species with male-biased operational sex ratios are more common.
B) female-biased operational sex ratios are more likely to occur in warmer environments.
C) the operational sex ratio shifts from male-biased to female-biased over the season.
D) there is higher mating success in males in the beginning of the season compared to the end of the season.