In a Federal Class-Action Law Suit

In a federal class-action law suit:

A) only one member of the class must meet the jurisdictional amount of $75,000.
B) at least 50% of the class must meet the jurisdictional amount of $75,000.
C) the total sued for by the class must add up to the jurisdictional amount of $75,000.
D) the average amount sued for by the class must meet the jurisdictional amount of $75,000 each.
E) the cost of trying the cases individually must exceed the jurisdictional amount of $75,000.