Academic Writing Directions: Use Your Knowledge of Writing, Editing, and the Conventions of the Conventions

Academic Writing Directions:
Use your knowledge of writing, editing, and the conventions of grammar to answer the following questions.
The correct way to fix a comma splice is by​

A) ​adding a coordinating conjunction or a subordinating conjunction.
B) ​replacing the comma with a period and creating two separate sentences.
C) ​replacing the comma with a semicolon.
D) ​all of the above