A piece of blue glass heated to a high temperature and a piece of red glass at room temperature are taken inside a dimly-lit room. Then,

• A. the blue piece will look blue and the red piece will look red as usual.
• B. the red piece will look brighter red and the blue piece will look ordinary blue.
• C. the blue will look brighter as compared to the red piece.
• D. both the pieces will look equal red.