Answer:
A, A, B, are the answers.
Explanation:
For this question, it is necessary to remember some of the rules for commas (according to Gram.arbook:)
1) In sentences where two independent clauses are joined by connectors such as and, or, but, etc., put a comma at the end of the first clause, which explains question number one.
2) Use commas to set off expressions that interrupt the sentence flow by using the word other.
3)Use commas to separate words and word groups in a simple series of three or more items: this rule applies for the third question, since it is also necessary to used it before the connector and.