Sunidhi could see a pointed beam of light on settingup an experiment as shown here. She used sheets P, Q and R made of three different materials respectively. She noticed that when she replaced the sheet P with a sheet made of the same material as sheet Q, then she could see the whole candle.
Which of the following options is correct regarding P, Q and R?
ASheet Q is made of a transparent material.
BSheet R is made of a transparent material.
CSheet P is made of an opaque material.
DAll of these.