Trehalose as a non-reducing disaccharide Steps:

• Trehalose gives negative Benedict's test, indicating a non-reducing sugar.
• Hydrolysis yields two glucose molecules, confirming it as a disaccharide.
• Disaccharides have formula C12H22O11, matching two C6H12O6 units minus water.
• Compare choices: select matching formula and disaccharide type (non-reducing like sucrose).

Why B is correct:

• C12H22O11 is the formula for non-reducing disaccharides like sucrose; trehalose shares this structure and properties.

Why the others are wrong:

• A: Fructose is a monosaccharide (C6H12O6), reducing and not matching disaccharide formula.
• C: C6H12O6 is monosaccharide formula; trehalose is a disaccharide.
• D: Sucrose name with C6H12O6 formula mismatches; sucrose is C12H22O11.

Final answer: B