Required information [The following information applies to the questions displayed below.] Christina, who is single, purchased 320 shares of Apple Incorporated stock several years ago for $16,320. During her year-end tax planning, she decided to sell 160 shares of Apple for $7,360 on December 30 . However, two weeks later, Apple introduced its latest iPhone, and she decided that she should buy the 160 shares (cost of $7,680 ) of Apple back before prices skyrocket. Note: Leave no answers blank. Enter zero if applicable. a. What is Christina's deductible loss on the sale of 160 shares? What is her basis in the 160 new shares? b. Assume the same facts, except that Christina repurchased only 80 shares for $3,840. What is Christina's deductible loss on the sale of 160 shares? What is her basis in the 80 new shares