Choose the correct indirect form: He said, 'Let it rain or shine, I will go.'

1. ক
   He said that he would go let it rain or shine.
   
2. খ
   He said that he would go whether it rained or shone.
   
3. গ
   He said that he will go whether it rains or shines.
   
4. ঘ
   He said that he would go even if it rains.