Which sentence is correct?

A. She tried to paint the building; however, it rained.

B. She tried to paint the building, however, it rained.

C. She tried to paint the building; however it rained.

D. None of the above

Sentence A is the correct option.

Explanation:

Sentence A is correct because when you have a conjunctive adverb linking two independent clauses, you should use a semicolon. In this case, both of these independent clauses have been connected by the conjunctive adverb however (see 1 and 2). What is more, you should use a comma after the conjuctive adverb because it appears in initial position in the second clause.

1) She tried to pain the building; (independent clause I)

2) However, it rained (independent clause II)

B She tried to paint, however, it rained