Net income calculation

Cost Accountant (Student) (92 Points)

03 December 2013  

Please help me out with this question...

What will be effect on the net income for the current year, if the opening stock is understated by ` 10,000 and the closing stock is overstated by ` 5,000?

(a) ` 15,000 overstated                            (b) ` 15,000 understated 

(c) ` 5,000 overstated                              (d) ` 5,000 understated 

Please explain also.....Thanks in advance and Regards.