While Stargazing One Night, You Notice That a Particular Star

Multiple Choice

While stargazing one night, you notice that a particular star appears to vanish whenever you move your eyes to a specific part of the sky. Why might this occur?

A) The light of the star is too dim to be detected by certain rods.
B) The light of the star is being projected onto the fovea, where there are too few rods to detect it.
C) The light of the star is being projected onto the periphery, where there are too few cones to detect it.
D) The light of the star is producing varying quanta of photons, which rods cannot reliably detect.
E) The light of the star is too dim to be detected by certain cones.