Christina, who is single, purchased 460 shares of Apple Incorporated stock several years ago for $20,240. During her year-end tax planning, she decided to sell 230 shares of Apple for $8,970 on December 30. However, two weeks later, Apple Introduced its latest iPhone, and she decided that she should buy the 230 shares (cost of $9,430) of Apple back before prices skyrocket (Leave no answers blank. Enter zero if applicable.) Problem 7-53 Part-a (Algo) a. What is Christina's deductible loss on the sale of 230 shares? What is her basis in the 230 new shares? Deductible lous Basis +