Some bacteria are motile and are able to swim towards or away from certain chemicals. This ability depends on long rotating filaments called flagella, and the direction of swimming depends on the switching of flagellar rotation from clockwise ot counter-clockwise. Regulation of flagellar rotation would occur at
a. the transcriptional level
b. the translational level
c. the post-translational level
a. the transcriptional level
b. the translational level
c. the post-translational level