Which of the Following Statements Best Describes $\beta$ -Thalassemia Major (Cooley Anemia)?
A)All Formed Elements of the Blood

Which of the following statements best describes $\beta$ -thalassemia major (Cooley anemia) ?

A) All formed elements of the blood are depressed.
B) Inadequate numbers of red blood cells are present.
C) Increased incidence occurs in families of Mediterranean extraction.
D) Increased incidence occurs in blacks of West African descent.