In 20X1, Juan is a student at UC Berkeley. Juan received the following from UC Berkeley in 20X1: $30,000 scholarship for Tuition $10,000 scholarship for Books and Fees $20,000 for working as a teaching assistant $20,000 for room and board How much of the above must Juan include in his taxable income for 20X1? Group of answer choices $20,000 $40,000 $50,000