According to general rule, an exclamation mark is used after an interjection or exclamation to indicate strong feelings or high volume, or to show emphasis, and often marks the end o a sentence. is used to mark the end of a complete sentence.
Exclamation marks are occasionally used mid sentence with a function similar to commas, for dramatic effect. Thus, the correct answer will be Option C.
The remaining options are incorrect, as a comma is used to indicate a pause whereas, a question mark is used to indicate an interrogatory clause. A period is used to mark an end to a complete sentence.