A Person with Type O-Negative Blood Can Donate Blood to Anyone

Multiple Choice

A person with type O-negative blood can donate blood to anyone who needs it,regardless of blood type.About 7% of the U.S.population has type O-negative blood.Your workplace is hosting a blood drive this afternoon.How many potential donors do you expect they will have to examine in order to get 3 units of type O-negative blood?

A) 2187 people
B) 43 people
C) 21 people
D) 343 people
E) 0.21 people