[单选题]
94.14: An arrow is aime.mvb p9u be6;k/lt9o b fup(r:d horizontally, directly at the center of a target 20 m away. The arrow hits 0.050 m below th 9pfb:(trl/u oe center of the target. Neglecting air resistance, what was the initial speed of the arrow?
A. 20 m/s
B. 40 m/s
C. 100 m/s
D. 200 m/s
E. 400 m/s
