From the list below, determine which properties are for compounds. I. It takes a large amount of energy to separates the elements of a compound. II. The proportions of the elements in a compound are always fixed. III. It is easy to separate the elements of a compound. IV. The elements/components of a compound do not retain their individual properties. A) I & II B) II & III C) I, II & IV D) II, III, & IV