Holly Wreath, a shareholder in the acquired corporation, turned in 100 shares of common stock with a basis of $4,200. In return she received voting convertible preferred stock worth $4,700 and a debenture with a face value of $1,000 and a value of $850. As a result, Holly must recognize a gain of:
a. $1,350
b. $850
c. $800
d. $0