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 is riding sidesaddle unstable ?
Options:
0. It is something that makes you mentally ill .
1. You have to ride a dress to ride sidesaddle .
2. It makes you feel less beautiful and is stressful .
3. None of the above choices .
Answer: 3