Which of the following sentences is punctuated correctly?
A.
I want to go to the concert, but I'm not sure if I will be able to make it to see the beginning.
B.
I want to go to the concert but I'm not sure if I will be able to make it to see the beginning.
C.
I want to go to the concert; but I'm not sure if I will be able to make it to see the beginning.
D.
I want to go to the concert but, I'm not sure if I will be able to make it to see the beginning.