Dentist works in a small farming community, where customers often pay him with goods or services rather than cash. After doing some work for Sandra and her kids, Sandra agrees to pay Dentist with eggs for the next year. The Dentist normally charges $300 for this work. If Dentist purchased eggs at the store, he would normally pay $200 a year for eggs. But Sandra is providing organic free-range eggs, which would cost someone $400 a year to buy. How much, if anything, does Dentist need to report as gross income? Question 4 options: a) $0, as this is a barter situation. b) $200. c) $300. d) $400