A firm has a market value equal to its book value. Currently, the firm has excess cash of $800, other assets of $3,200, and equity of $4,000. The firm has 400 shares of stock outstanding and net income of $600. The firm has decided to spend half of its excess cash on a share repurchase program. How many shares of stock will be outstanding after the stock repurchase is completed?

a. 340 shares

b. 360 shares

c. 320 shares

d. 380 shares

e. 400 shares