The correct option is
A Fructose
A monosaccharide is the simplest form of carbohydrate which is composed of carbon, hydrogen, and oxygen. The basic formula of the monosaccharide is C
nH
2nO
n. These are considered as the simplest form of sugar. Fructose is a monosaccharide with five carbon atom. C
5H
10O
5 is the molecular formula of fructose. It is the sweetest sugar. It is mainly found in fruits, nuts, and vegetables.
So, the correct answer is option A.