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

There are some girls wearing karate uniforms doing karate on a stage. there

Select from: (a). 's a couple doing red shirts on a stage.. (b). 's an orange belt and a yellow belt karate student doing some karate moves with batons in their hands.. (c). are acacia, in a yellow, sleeveless shirt with colorful sleeves and karate tights.. (d). is a lot of music, jumprope, and other music here as well as dancing..
The answer is:
(b).