Bundling Raises Higher Revenues Than Selling the Goods Separately When

Bundling raises higher revenues than selling the goods separately when:

A) demands for two goods are highly positively correlated.
B) demands for two products are mildly positively correlated.
C) demands for two products are negatively correlated.
D) there is a perfect positive correlation between the demands for two goods.
E) the goods are complementary in nature.