If the manager lowered the price as the salesman suggests, what would the final price be

A．Sunglasses block out only a limited amount of the sun’s ultraviolet rays that can damage the eye.
B．Sunglasses can only filter harmful rays during total solar eclipses at their greatest magnitude.
C．Sunglasses tend to cause the center of the eye to enlarge allowing in more intense light.
D．Sunglasses should be used when any part of the sun is visible.