Which one of the following carbohydrates is tri-saccharides?

Which one of the following carbohydrates is tri-saccharides?

مندرجہ ذیل میں سے کون سا کاربوہائیڈریٹ سہ رخی ہے؟
Explanation

Raffinose is a trisaccharide, composed of galactose, glucose, and fructose.

Lactose is a disaccharide.

Fructose is a monosaccharide.