Given that,
- $A(x,y)=x+y$
- $M(x,y)=xy$
- $S(x,y)=x−y$
- $D(x,y)=x/y;y\ne0$
Now, the value of $M(M(A(M(x,y),S(y,x)),x),A(y,x))$ for $x=2,y=3:$
$\Rightarrow M(M(A(M(2,3),S(3,2)),2),A(3,2))$
$\Rightarrow M(M(A(6,1),2),5)$
$\Rightarrow M(M(7,2),5)$
$\Rightarrow M(14,5)$
$\Rightarrow 70$
Correct Answer $:\text{D}$