Why Is Milk Sold in Cardboard or Opaque Plastic Containers

Why is milk sold in cardboard or opaque plastic containers, instead of clear glass bottles?

A) to prevent the amino acid content from being destroyed by UV light
B) to prevent vitamin A from being destroyed by UV light
C) to prevent thiamin from being destroyed by UV light
D) to prevent riboflavin from being destroyed by UV light
E) to prevent vitamin C from being destroyed by UV light