For Weber, How Can a Class of People Not Be

For Weber, how can a class of people not be conscious that they are, indeed, a class, as in Marx?

A) Class consciousness requires a complex set of circumstances for people to come together. Large numbers of people must also be affected.
B) They are simply not capable of being conscious of being a class at all times. There has to be a single reason.
C) They are only a class when their life chances are threatened by a specific economic event, such as a depression.
D) Class consciousness only occurs when the intelligentsia inform and organize them.