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Christina, who is single, purchased 580 shares of Apple Inc. stock several years ago for $22,040. During her year-end tax planning, she decided to sell 290 shares of Apple for $9,570 on December 30. However, two weeks later, Apple introduced its latest iPhone, and she decided that she should buy the 290 shares (cost of $10,150) of Apple back before prices skyrocket.

b.Assume the same facts, except that Christina repurchased only 145 shares for $5,075. What is Christina's deductible loss on the sale of 290 shares? What is her basis in the 145 new shares?