A message signal of frequency $w_m$ is super posed on a carrier wave of frequency $w_c$ to get an amplitude modulated wave (Am). The frequency of the AM wave will be

Question

$\begin{array}{1 1} w_m \\ w_c \\ \large\frac{w_c+w_m}{2} \\ \large\frac{w_c-w_m}{2} \end{array}$