[单选题]
A butterfly moves with a sph r2 kcpe (u).e8kvep3b+p3 theed of 12.0 m/s. The x compo,4 agx7 f5 5xrsszqz8lnent of its velocity is 8.00 m/s. The angle between the direction of its mra5xl7zsx8g z5s f 4,qotion and the x axis must be
A. $30.0^{\circ}$
B. $41.8^{\circ}$
C. $48.2^{\circ}$
D. $53.0^{\circ}$
