In 2020, Dina has two qualifying children under age 17 which entitle her to a child credit and a head of household filing status. Her salary is $20,500 giving her a tax liability of $185. What is the refundable amount of child credit Dina will receive in this situation?

a. $2,800

b. $3,815

c. $2,700

d. $ 0

e. None of the answers provided is correct.