Which Quantity Can Be Converted to the SI System by the Conversion

Multiple Choice

Which quantity can be converted to the SI system by the conversion factor? $\frac{1000 \mathrm{~m}}{\mathrm{~km}} \frac{1 \mathrm{hr}}{3600 \mathrm{~s}}$ ?

A) kilometers per hour
B) metres per second
C) miles per hour
D) kilometres per second
E) kilometers per minute