Which of the following statement is correct?

a. A shareholders basis in S corporation stock can be reduced below zero only by losses from the corporation and not distribution

b. The basis of an S corporation shareholder stock is increased by cash and property distributions from the corporation that are not included in the shareholder income

c. The basis of an S corporation shareholders stock is increased by cash and property distributions from the corporation that are not included in the shareholder income

d. Non of the above