5. Which of the following sentences is correct?

1. It will have made us feel comfortable for years now.
2. We had been very positive about the issue since this happened.
3. Carlos and Martin has explored Asia since they graduated in college.
4. My brother has shown great interest in film making since his younger years.

A 1and 2
B. 3 and 4
C. 1,3 and 4
D. 4 only​