usanne Denholm is employed as a provincial payroll tax auditor and is required by contract to maintain an office in her home. Susanne works at home most of the time and has been provided with a laptop computer and a fireproof audit bag for her files. She has not been provided with any reimbursement or allowance in connection with her home office, which occupies 10% of the square footage of her home. She incurred the following costs to maintain her entire home this year: Telephone (general line) $ 600* House insurance Property taxes Heat, hydro, & maintenance Mortgage interest (a) $500 (b) $1,100 (c) $1,400 (d) $3,800 P * Susanne estimates that she used her telephone 50% for employment purposes during the year. What is the maximum amount that Susanne can claim for the costs she has incurred in respect of her home office? Show your work and explain why each is true or false.