[单选题]
A butterfly moves with a speed of 12. tb;2mnz2j) z6tu+yj60 obffz0 m/s. The x zy9(k+l-vp prir17p r component of its velocity is 8.00 m/s. The angle between the direction opy prl1+ 7zi (rkp9-rvf its motion and the x axis must be
A. $30.0^{\circ}$
B. $41.8^{\circ}$
C. $48.2^{\circ}$
D. $53.0^{\circ}$
