i will like to onow how to solve it. the answer is B

NOTE: Use the following information to answer Questions 13-15. 13. Mr. and Mrs. Lawson have the following tax information for 2018 and file a joint return. Salary-Mr. Lawson $ 90,000 Salary-Mrs. Lawson 60,000 Gross receipts from Mr. Lawson's consulting business 210,000 Expenses related to Mr. Lawson's consulting business 140,000 Interest received from municipal bonds 12.000 Itemized deductions 0 What is Mr. Lawson's self-employment tax (rounded)? a. $ 5,875 b. $ 6,636 c. $10,710 d. $ 9,891 e. None of the above