People often clean eyeglasses by holding them near their mouths and exhaling heavily on them. This usually causes the lenses to "fog"; the moisture is then wiped off, and this process cleans the lenses.
Assuming the air in the lungs has a relative humidity of 75.0% at a dry bulb temperature of 100.°F, determine the maximum temperature of the glasses that just causes moisture droplets (i.e., "fog") to form when cleaned in this manner.