Melba receives most of her income from wages from her job as a high school teacher. she also receives supplemental income from freelance tutoring part-time during the summer. because her tutoring income is not subject to withholding, melba is concerned that she will have a balance due at the end of the year. which of the following is an option you can recommend to melba to avoid a balance due?

a) decrease her withholding allowances by submitting form w-4 to her employer.

b) claim an exemption from withholding.

c) send a notarized letter to her employer requesting that they withhold additional amounts from her pay each month.

d) investigate whether she qualifies to classify her tutoring income as a hobby rather than as business income.