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Which of the following sentences is grammatically correct?
a. I would like to go to the museum with you, however, I must visit my dentist instead.
b. I would like to go to the musium with you; however, I must visit my dentist instead.
c. I would like to go to the museum; however, I must visit my dentist instead.
d. I would like to go to the museum; however, I must visit my Dentist instead.
What is C (I would like to go to the museum; however, I must visit my dentist instead).