Choose the correctly punctuated sentence.
a) My professor's advice was very computer's in the library are always a good option for printing papers.
b) My professor's advice was very, computer's in the library are always a good option for printing papers.
c) My professor's advice was very; computer's in the library are always a good option for printing papers.
d) My professor's advice was very; computers in the library are always a good option for printing papers.