Effect of Omitting Adjustments For the year ending April 30, Peck Medical Services Co. mistakenly omitted adjusting entries for (1) $8,400 of supplies that were used, (2) unearned revenue of $12,000 that was earned, and (3) insurance of $3,100 that expired. Indicate the combined effect of the errors on (a) revenues, (b) expenses, and (c) net income for the year ended April 30. (a) Revenues (b) Expenses (c) Net income