A Superhero in a Comic Book Boasts That His Senses

A superhero in a comic book boasts that his senses are so well developed that he can see a candle flame at night at a distance of 30 miles,hear the tick of a watch at 20 feet,detect the presence of one teaspoon of sugar in 20 gallons of water,and smell one drop of perfume that has been sprayed in an area equivalent to a three-room apartment.Which one of these claims is extraordinary?

A) seeing the flame from a candle at a distance of thirty miles.
B) hearing the tick of a watch at a distance of twenty feet.
C) tasting the presence of a teaspoon of sugar in 20 gallons of water.
D) smelling the perfume in an area the size of a three-room apartment.