How would you correct the following run on sentence? the student completed the exam they failed because they did not study.

a. add a semicolon between the two independent clauses where the second independent clause begin with the a capitalized letter.

b. join the two independent clauses with a coordinating conjunction followed by a coma.

c. add a semicolon followed by a dependent clause

d. add a semicolon , then the transition , then the comma between two independent clauses