CUNY CS MS :什么是带条件的AD？

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“Your admission to the Grove School of Engineering is being offered with the condition that you take CSC 22000, CSC 30100, CSC 30400, CSC 33200 and CSC 33200 before taking any graduate courses and receive a "B" or better.   Failure to satisfy these conditions may result in the revocation of this offer of admission. ”

意思是说要拿到硕士学位，除了修30个学分之前还得再修这5门课（估计15学分），是不是必须多交这15学分的钱？