If Chip and Cathy Have Different Valuations on Dancing and Dinner

Multiple Choice

If Chip and Cathy have different valuations on dancing and dinner as in the following table,what is the maximum profit Sammy can extract from Chip and Cathy for an evening's entertainment at Sammy's dinner theater if Sammy's marginal cost is $25 for dinner and $5 for dancing per person?

A) $60.
B) $70.
C) $80.
D) $90.
E) $100.