Martin and alexia are rock climbing each person's rate stays the same for the first hour they climb mountain climbers 3 1/3 meters in the first one 1/6 hour . alexia climbs 17 1/2 in the first 5/6 hour. which statements are true? choose all that apply a. martin climbs at a rate of 20 meters per hour. b. alexia takes 1/21 of an hour to climb 1 meter . c martin climbs at a rate of 1/20 per hour. d . alexia climbs at a rate of 21 meters per hour. e. martin takes 1/21 of an hour to take climb 1 meter. f. alexia climbs at a rate of 1/21 per hour.