Choose the correctly punctuated sentence.

1. ক
   He visited London, Paris, and Rome; however, he did not have time for Berlin.
   
2. খ
   He visited London, Paris, and Rome, however, he did not have time for Berlin.
   
3. গ
   He visited London, Paris and Rome; however he did not have time for Berlin.
   
4. ঘ
   He visited London, Paris, and Rome, however he did not have time for Berlin.