For the year ending April 30, Safeguard Medical Services Co. mistakenly omitted adjusting entries for (1) $1,700 of supplies that were used, (2) unearned revenue of $8,000 that was earned, and (3) insurance of $10,900 that expired. Indicate the 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