Correct option is C
Lumen (lm) –
Derived unit of luminous flux (
cd·sr, candela steradian).
Volt (V) –
Derived unit of electric potential (
W/A or
kg·m²/s³·A).
Mole (mol) –
Fundamental unit for the amount of substance.
Radian (rad) –
Derived unit for plane angle (
m/m, dimensionless).
