Which of the folllowing statements is true with regard to the classification of employemnt-related expenses?

a. A self-employed taxpayer's businness travel expenses are deductible as itemized deductions

b. Reimubrsment employee businness expenses are always deductible as deductions for adjusted gross income.

c. Unreimbursed employee business expenses are deductible as deductions for adjusted gross income.

d. Unreimbursed employee business expenses are deductible as deductions from adjusted gross income.

e. All of the above are true