Colin (age 40) is single, itemizes his deductions, and has AGI of $100,000. Colin provided the following information about his cash expenditures for 2016:

Interest on American Express card 1,200

Points to refinance his home for 10 years at the end of December 2,600

Mortgage interest payments on $250,000 principal amount 11,800

Real estate taxes 2,100

State income taxes withheld on salary 5,400

Additional state income tax estimated payment 1,200

Contribution to Republican Party 2,000

Contribution to United Way 500

If Colin itemizes, what are his total itemized deductions in 2016:

a. $18,100

b. $21,000

c. $24,200

d. $27,000