The Doppler shift of ultrasonic waves can gauge the speed of blood in an artery. If the frequency of the stationary source is 100 kHz and the reflected sound has a Doppler shift of 200 Hz, Determine is the blood flow speed? (The speed of sound inside the body is 1 500m/s.)
A. 1.0 m/s
B. 1.5 m/s
C. 2.2 m/s
D. 3.3 m/s