Hector went to the music store by heading due south at 3 m/s then Turing west and continuing at the same speed for another three blocks. Which of the following is true about hectors velocity?
A. Hectors velocity changed because his direction changed
B. Hectors velocity did not change because his direction did not change
C. Hectors velocity changed because his speed changed
D. Hectors velocity did not change because his speed did not change