The mean position and one extreme position of the two different waves represented by $x=10-20 \sin(8t)$ and $x=12+21sin(3t)$ respectively are:

Question

$\begin{array}{1 1}(a)\;46,0,28,-22 \\(b)\;10,-10,12,-9 \\( c)\; 23,0,28,46 \\(d)\; 0,23,5,-18 \end{array}$