Which of the following sentences correctly uses a semicolon to join two independent clauses?

1. ক
   I love reading; however, I don't have much time.
   
2. খ
   I love reading; and I don't have much time.
   
3. গ
   I love reading, however; I don't have much time.
   
4. ঘ
   I love reading; but I don't have much time.