Which is the correct combination of the given two sentences?
What is the name of the minister? His brother has been sent to prison.
1
What is the name of the minister the brother of whose has been sent to prison?
2
What is the name of the minister whose brother has been sent to prison?
3
Which is the name of the minister whose brother has been sent to prison?
4
What is the name of the minister whose brother has been send to prison?