QUESTION 18 Mr. and Mrs. B file a joint income tax return. Mr. Bowns and operates a grocery store that had a net income of $15,000 in the current year. Mrs. Bis a self-employed physical therapist, and her net income was $42,900. What is the total amount of self-employment tax Mr. and Mrs. B must report on their joint return for the current year? $6,630 $4,090 $8,181 $8,859