67. Which of the following statement about operating Circular Saw is incorrect？ (A)The saw blade should extend through the material being cut by 1/8 inches. (B)Safety glasses, hearing protection, respirator and gloves should be worn by the operators. (C)Material should be well supported when being cut to prevent binding the saw blade and causing a kickback. (D)Before putting the saw down after a cut has been made, make sure the cover is over the blade.