Required information [The following information applies to the questions displayed below.] Christina, who is single, purchased 500 shares of Apple Incorporated (Nasdaq: AAPL) stock several years ago for $21,000. During her year-end tax planning, she decided to sell 250 shares of Apple for $9,250 on December 30. However, two weeks later, Apple introduced its latest iPhone, and she decided that she should buy the 250 shares (cost of $9,750 ) 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 250 shares? What is her basis in the 250 new shares? Required information [The following information applies to the questions displayed below.] Christina, who is single, purchased 500 shares of Apple incorporated (Nasdaq: AAPL) stock several years ago for $21,000. During her year-end tax planning, she decided to sell 250 shares of Apple for $9,250 on December 30 . However, two weeks later, Apple introduced its latest iPhone, and she decided that she should buy the 250 shares (cost of $9.750 ) of Apple back before prices skyrocket. Note: Leave no answers blank. Enter zero if applicable. Assume the same facts, except that Christina repurchased only 125 shares for $4,875. What is Christina's deductible loss on the sale f 250 shares? What is her basis in the 125 new shares