1.

Convert the following Infix expression to Postfix form using a stack.
x + y * z + (p * q + r) * s, Follow usual precedence rule and assume that the expression is legal.

A. xyz*+pq*r+s*+
B. xyz*+pq*r+s+*
C. xyz+*pq*r+s*+
D. xyzp+**qr+s*+
Answer» B. xyz*+pq*r+s+*


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