Sonny incurred the following expenses last month in his self$-$employment business: Khaki pants and a blue button$-$down shirt to wear to work; tuition for a course in marketing to improve his current job skills as a fashion designer; and groceries so that he could take his lunch to work. Which of these expenses is$/$are deductible business expenses?

Multiple choice question.

tuition and clothing

non are deductible

khaki pants and blue shirt

groceries for his lunches while at work

Tuition for the marketing course