Kwun inc purchases 1000 shares of its own previously issued

Question

1. Kwun, Inc. purchases 1,000 shares of its own previously issued $5 par common stock for $12,000. Assuming the shares are held in the treasury, what effect does this transaction have on

(a) Net income,

(b) Total assets, 

(c) Total paid-in capital, and 

(d) Total stockholders' equity?