If the baud rate for a QAM signal is 1800 and the bit rate is-06986

If the baud rate for a QAM signal is 1800 and the bit rate is 9000, how many bits are there per signal unit?

This multiple choice question (MCQ) is related to the book/course vu cs601 Data Communication. It can also be found in vu cs601 Mid Term - Quiz No.4.