This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to size and take care of goalkeeper gloves
Know general sizing ranges for goalkeeper gloves.
In order for you to use your gloves most effectively during a match, they need to fit properly. If gloves are the wrong size, it can affect not only your performance but also the durability of the gloves.

OPT: a. Goalkeeper gloves can be worn over or under your face, but they should cover your legs and feet. It can also be dressed above or below your knee, in order to help with any weaknesses.; b. Consider your own comfort zone when the gloves are found out to avoid ruin or putting you into any trouble. Wear the gloves no matter where or when you get the ball.; c. Measure your hands for perfectly fitting gloves, but the following is a general sizing guide for junior and senior players. For junior players: size 4 or 5 is for a small junior goalie who is between 7 and 9 years old and wears size youth small goalkeeper gear.; d. Buy gloves that are either " size 9 " or also " size 1 ". Numbers 9 and higher will affect your performance.;
The answer is:
c.