Which of the following is not a basis for classifying enzymes as regarded by the Food Additives and Contaminants Committee (FACC) of the Ministry of Agriculture, UK?

• A. Acceptable for use in food
• B. There should be a market for the biosensor
• C. Definite or probable toxicity and which ought not to be permitted for use in food
• D. It is not possible to express an opinion as to their acceptability for use in food