Warrants exerisable at $25 each to obtain 30,000 shares of common stock were outstanding during a period when the average market price of the common stock was $30. Application of the treasury stock method for the assumed exercise of these warrants in computing diluted earnings per share will increase the weighted average number of outstanding shares by:

a. 30,000

b. 25,000

c. 5,000

d. 0