Ruth is a physician who uses the cash method of accounting for tax purposes. During the current year, Ruth bills Lance $1,700 for office visits and outpatient surgery. Unfortunately, unknown to Ruth, Lance moves away leaving no payment and no forwarding address. Requirement What is the amount of Ruth's bad debt deduction with respect to Lance's debt? (Complete the input field. If there is no bad debt deduction, enter a "0".) Ruth's bad debt deduction with respect to Lance's debt is