19. A magician can make a candle look as if it is burning under water by focusing light from a candle flame burning in air directly on top of an underwater candle. To do this you want to use
(A) a biconcave lens farther than one focal length from the burning candle.
(B) a convex mirror farther than one focal length from the burning candle.
(C) concave mirror farther than one focal length from the burning candle.
(D) a concave mirror closer than one focal length to the burning candle.
(E) a convex lens closer than one focal length to the burning candle.