In a revised set of units, the unit of length is larger by 4,% and the unit of time is smaller by 2,%, while the unit of mass is unchanged. Approximately what is the percentage change in the numerical value of the velocity of a body measured in the new system?
a) +2.0%(increases)
b) −2.0%(decreases)
c) −5.8%(decreases)
d) +6.1%(increases)