Select the Answer That Corrects the Comma Splice or Run-On

Select the answer that corrects the comma splice or run-on sentence.
-The students stood in line all afternoon they wanted to get good seats at the concert.

A) The students stood in line all afternoon; they, wanted to get good seats at the concert.
B) The students stood in line all afternoon, they wanted to get good seats at the concert.
C) The students stood in line all afternoon; since they wanted to get good seats at the concert.
D) The students stood in line all afternoon, since they wanted to get good seats at the concert.