The balance sheet of IceJJFish Corp. showed the following data about its common stock, par $1: authorized shares, 10,000,000; outstanding shares, 4,300,000; and issued shares 4,700,000. Therefore, the number of treasury stock shares was:

a) 400,000

b) 4,700,000

c) 4,300,000

d) None of the above are correct