Sneh classified some materials as shown below.
W and X refer to _____ and _____ respectively.
A W : Allows light to pass through easily , X : Does not allow light to pass through at all
B W : Non magnetic , X : Magnetic
C W : Does not conduct electricity , X : Conducts electricity easily
D W : Colourless , X : Coloured
why is answer C correct option A is also correct