The correct option is B Acid soluble - Amino acids, sugars, vitamins
Acid insoluble - Proteins, nucleic acids, lipids
If a living tissue is ground with trichloroacetic acid and filtered, an acid-soluble and an acid-insoluble fraction are obtained. The acid soluble fraction contains compounds less than 800 daltons, except lipids. Thus, amino acids, sugars and vitamins belong to this fraction. The acid-insoluble fraction includes compounds such as proteins nucleic acids and lipids.