Ajay wants to stick 20 smileys on his notebook? What is the way he can put the smileys on his notebook

Question

$\begin{array}{11} (a)\; \text{3 rows 7 stickers} \\ (b)\; \text{4 rows 5 stickers} \\ (c)\; \text{5 rows 6 stickers} \\ (d)\; \text{3 rows 6 stickers } \end{array}$