13 years = 360× 13 days = 4680 days.
4680 days = 4680× 24× 60 = 6739200 minutes
4680 days = 4680× 24 = 1 12320 hours.
4680 days = 4680/7 = 668 weeks
4680 days = 4680/30 = 156 months
therefore
Choose C.
650 weeks is the latest.