The longest side may, but need not, pass through the center of the circle. Thus, its length
could be either equal to or less than the circle's diameter. NOTE: If the triangle were equilateral, the
correct answer would have been choice (B); if it were a right triangle, the correct answer would have been
choice (C).

A total of 32 horses (20 + 12) are either black or white. That leaves 28 horses of some other
color. A total of 32 horses are stallions. Thus, it is possible that all ofthe stallions are either black or white,
and that none of the stallions are some other color. (Quantity A = 0.) However, at least 4 of the stallions
must be either black or white. (Quantity B = 4.)