Shamrock Company had net income of $30,000. On Jan 1, there were 8,000 shares of common stock outstanding. On April 1, the company issued an additional 2,000 shares of common stock. There were no other stock transactions. The company has earnings per share of:

A. $3.75

B. $3.00

C. $3.33

D. $3.16

(Please include the formula used to produce the answer)