find her deductible loss in the sale and basis in the 50 new shares?

Christina, who is single, purchased 200 shares of Apple Incorporated (Nasdaq: AAPL) stock several years ago for $11,400. During her year-end tax planning, she decided to sell 100 shares of Apple for $5,200 on December 30 . However, two weeks later, Apple introduced its latest iPhone, and she decided that she should buy the 100 shares (cost of $5,400 ) of Apple back before prices skyrocket. Note: Leave no answers blank. Enter zero if applicable. . Assume the same facts, except that Christina repurchased only 50 shares for $2,700. What is Christina's deductible loss on the sale 100 shares? What is her basis in the 50 new shares