The following passage provides information regarding the most popular type of foods in the United Kingdom. Such information has been compiled by the UK Foods Standards Agency since 1990 as part of an on-going project to encourage consumers to purchase healthier products, such as fruit and vegetables, whole grain foods and foods low in saturated fat.Currently, the most popular types of food in the UK are those which are easy to prepare. Items requiring time consuming preparation continue to suffer comparatively lower sales rates. In this way, the Foods Standards Agency has found that pack items, those containing ready-measured baking ingredients, are more popular than buying fresh ingredients in bulk. Similarly, ready baked items, such as bread and biscuits, continue to sell well.

Question: Since 1990, the UK Foods Standards Agency has discouraged the purchase of pack-items
Options:
A. true, B. false, C. uncertain
Answer: "C"