Need help only on last part ("Determine total net income using results from previous part" & "Is net income different from that determined in part (b)?") with explanation of answer please.

Question 3 of 5 eTextbook and Media * Your answer is incorrect. Determine total net income using the results from previous part. Net income $ (74500) Is the net income different from that determined in part (b)? No net income is lower by $ e Textbook and Media