Some _______ pigment has been added to green lights and some ________ – McqOptions

MCQOPTIONS

1.	Some _______ pigment has been added to green lights and some ________ pigment has been added to red light to make it easier for the colourblind drivers to distinguish it.
A.	blue, yellow
B.	red, green
C.	yellow, blue
D.	green, red
Answer» B. red, green

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