All of the following distributions of stock dividends are taxable except:

a: the shareholders have the choice to receive cash or other property instead of stock or stock rights.

b: the distribution of common stock is made on a prorated basis on common stock outstanding.

C: the distribution gives cash or other property to some shareholders and an increase in the percentage interest in the corporation's assets or earnings and profits to other shareholders.

d: the distribution gives preffered stock to some common stock shareholders and common stock to other common stock shareholders.