Which of the Following Choices Denotes the Typical Cost Behaviour

Which of the following choices denotes the typical cost behaviour of advertising and sales commissions? $\begin{array} { | l | l | l | l | } \hline & \text { Advertising } & &\text { Sales } \\&&&\text { Commissions }\\\hline 1 & \text { Variable } & & \text { Variable } \\\hline 2 & \text { Variable } & & \text { liixed } \\\hline 3 & \text { lixed } & & \text { Variable } \\\hline 4 & \text { Fixed } & & \text { Fixed } \\\hline 5 & \text { Semi-variable } & & \text { Variable } \\\hline\end{array}$

A) 1
B) 2
C) 3
D) 4
E) 5