An athletic trainer must be on the football field to cover practice at 16:00. If it takes 1 hour to treat and tape athletes before practice and an additional 45 minutes to load and take the water coolers to the practice field, what time will he need to arrive at work? Standard time: 24-hour clock.
a) 14:15
b) 14:30
c) 14:45
d) 15:15