[单选题]
If the acceleration ofnr4sra48;:gd) ha2 b;sv 0hxnfpsc w6r .0hoeo859ruz6q obo w x7q;p an object is always directed perpendicular to its velocitq 0;69q8ox.bo5ou7 w pozrhe ry,
A. the object is speeding up.
B. the object is slowing down.
C. the object is turning.
D. this situation would not be physically possible.