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$A, S, M$ and $D$ are functions of $x$ and $y$, and they are defined as follows.

- $A(x, y) = x + y$
- $M(x, y) = xy$
- $S(x,y)= x-y$
- $D(x,y)= x/y, y\neq 0$

What is the value of $M(M(A(M(x, y), S(y, x)), x), A(y, x))$ for $x = 2, y = 3$?

- $60$
- $140$
- $25$
- $70$

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