As of December $15,2020,$ Sahir, a $45-$year$-$old Canadian resident, has a tax$-$free savings account with a fair market value of $$60,000.$ Sahir$$s unused TFSA contribution room at the end of last year was $$12,000,$ and he has not made any current year contributions. In September of last year, he withdrew $$4,000$ from the TFSA. Assume that his contribution limit is $$6,000$ this year. How much can Sahir contribute to his TFSA this year?

a$.$

$$14,000.$

b$.$

$$22,000.$

c$.$

$$16,000.$

d$.$

$$18,000.$