Accounting, pls help... need solutions... What is the total effect of the errors in the net income of Blad Firm?

The bookkeeper of Blad Firm failed to recognize the following:

• Earned agency fee but not yet received, $3,000

• Unused supplies of $1,500

• Accrued expenses of $3,800

a. Net Income is overstated by $6,950.

b. No effect

c. Net income is overstated by $2,300.

d. Net income is understated by $700.

plz provide solution, ty...