62. When Mr. F loaned $2,000 to his brother, his brother signed a note and made monthly payments until he was injured in an accident. Mr. F is still owed $500 and his brother, who is no longer able to work, has declared bank- ruptcy. Mr. F had also guaranteed his brother's bank loan as a favor to his brother and was required to pay off the $800 loan balance. Mr. F, a cash method taxpayer, is also owed $500 rent by a former tenant. How much bad debt deduction can Mr. F take on his tax return? A. $1,800 B. $500 C. $1,000 D. $1,300