Sienna is a self-employed taxpayer working exclusively from her home office. Before the home office deduction, Sienna has $6,000 of net income. Her allocable home expenses are $10,000 in total. How are the home office expenses treated on her current year tax return? a. Only $3,000 a year of the home office expenses may be deducted b. All home office expenses may be deducted, resulting in a business loss of $4,000 c. Only $6,000 of home office expenses may be deducted, resulting in a net business income of zero. None of the remaining $4,000 of home office expenses may be carried forward or deducted. d. Only $6,000 home office expenses may be deducted, resulting in net business income of zero. The remaining $4,000 of home office expenses may be carried forward and deducted in a future year against business income