Which of the following statement is incorrect regarding the locomotion in Euglena?

• A. Move with the help of flagellum, attached to the anterior pole of the body.
• B. Flagellum whipping backwards moving the organism forward, and when moves forward the organism moves backward.
• C. Myonemes can change the direction of the body by making it to shorten from anterior to the posterior pole.
• D. None of these