Why can we see moon and the star only during the night time?

Question

$\begin{array}{1 1} (a)\; \text{They are not available during day time} \\ (b)\; \text{Moons and Stars does not have light} \\ (c)\; \text{The Sun, makes our sky so bright that we cannot see the much dimmer stars and moon} \\ (d)\; \text{None of the above} \end{array}$