Context: " Hey , hey ... that 's some good shit ! " " It 's sake ? " Rin gripped the mane of Anotsu 's horse when it turned to touch noses with the other ; she still felt unstable on a horse by herself , especially since she had chosen to ride sidesaddle . " Nope , shochu . " Manji tilted his head back and took a long , stiff pull , his throat bobbing . He squinted against the sun , wiped his mouth on the back of his hand and let out a heated puff of breath . " Hahh !

Question: Why does Rin not want his horse to touch noses with another ?
Options:
0. The horses might become antsy or frisky and buck the rider off .
1. None of the above choices .
2. Horses might decide they will revolt and rise up against humans .
3. There are strict rules about horses playing with each other .
Answer: 0