What will the time be in 18 hours

What time will it be 18 hours from now in India, if in the USA it is 4:15 AM?

What will the time be in 18 hours

(Hint : IST = US + 9:30 hrs)

A) 1:45 in the afternoon B) 7:45 in the evening
C) 7:45 in the next morning D) 1:45 in the next morning

Answer: C) 7:45 in the next morning