Can you explain your process of answering this question. thankyou

Given the following C++ code: int first =7, second =2; int exchange( int \& alpha, int \& beta ) // Note: Parameters passed by REFERENCE \{ int temp; temp = alpha; alpha = beta; beta = temp; return alpha + beta; \} 1c Evaluate the expression:exchange(first, second) + second-- - first- - assuming side-effect does not affect the value of variables within the same expression and operands are evaluated Left Right - assuming side-effect does affect the value of variables within the same expression and - operands are evaluated Left Right - operands are evaluated Right Left