Which of the following statements regarding the home office deduction is correct?
a. There is no annual dollar limit on the home office deduction.
b. The home office deduction is composed of both direct expenses and a portion of indirect expenses.
c. If the deduction is more than the taxable income limit (essentially gross income minus deductions from the office), the excess can be carried forward indefinitely.
d. The home office of a sole proprietor who uses the space to schedule appointments, order supplies, and keeps the books is treated as the principal place of business, and expenses for the office can be deductible.