Step-by-step explanation:
This question doesnt make too much sense. For a po;ynomial to be a trinomial, it needs to have 3 terms. A or B works in that case. But to have a degree of 3, it has to have a highest exponent of 3. So C works in this case. I think there might be a typo in this question, but it is most likely C. Please let me know if you have any other questions. Please mark brainliest
