Dominique's total allowable medical expenses in 2019 were $4,200. Her net income was $70,000 and the cut-off for the medical expense amount in 2019 was 3% of net income, or $2,353, whichever is less. What was her federal medical expense tax credit in 2019? The lowest federal tax rate was 15%.

a. $353

b. $277

c.$315

d. $630