Correct option is (a) Substances are permitted for use in food until adequate evidence of their safety has been provided to establish their acceptability
The explanation: According to the Food Additives and Contaminants Committee (FACC) of the Ministry of Agriculture, Fisheries and Food enzymes are distinguished into five classes based their safety for presence in the foods and use in their manufacture. This states that “if group B suggests substances are provisionally acceptable, then group C suggests substances are permitted for use in food until adequate evidence of their safety has been provided to establish their acceptability.”