A certain compound gives negative test with ninhydrin and positive test with Benedict's solution. The compound is

Options

A. A protein
B. An amino acid
C. A lipid
D. A monosaccharide

Explanation

To solve the problem, we need to analyze the information provided about the compound based on the tests it undergoes.

### Step-by-Step Solution:

1. **Understanding the Tests:**
- **Ninhydrin Test:** This test is used to detect the presence of amino acids and amines. A positive result (purple color) indicates the presence of an amino group, while a negative result indicates that the compound does not contain an amino group or alpha amino acid.
- **Benedict's Test:** This test is used to detect reducing sugars. A positive result (brick red or orange color) indicates the presence of reducing sugars, such as monosaccharides.

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