Let the function fun be defined as

int Eun$(int+k)1$

$**k+=4$;

return $3+(+k)-1$;

$1$

Suppose fun is used in a program as follows:

void main

What are the values of sum$1$ and sum$2$

a$.$ operands in the expressions are evaluated left to right?

b$.$ operands in the expressions are evaluated right to left?