Alfred Is an African-American Long-Distance Runner Whose BMI Classifies Him

Alfred is an African-American long-distance runner whose BMI classifies him as obese.Why might this be? 

A)  Blacks have a higher average height than whites. 
B)  Blacks have denser bones and higher body protein concentrations than whites. 
C)  Blacks tend to have different proportions of brown and white adipose tissue than whites. 
D)  The fat pads in blacks are situated primarily around the hips, whereas in whites the pads are primarily abdominal. 
E)  Blacks have both lower average height and higher average weight than whites.