Determine whether the following pair of events are mutually exclusive.
A = {A person earns more than $25,000} B = {A person earns less than $20,000}
A card is drawn from a deck: C = {It is a King} D = {It is a heart}
A single, fair, 6-sided die is rolled: E = {An even number shows} F = {A number greater than 3 shows}