Which of the following statements about an ellipse is NOT true?
(a) An ellipse with a large eccentricity looks much more elongated (stretched out) than an ellipse with a small eccentricity.
(b) The focus of an ellipse is always located precisely at the center of the ellipse.
(c) A circle is considered to be a special type of ellipse.
(d) The semimajor axis of an ellipse is half the length of the longest line that you can draw across an ellipse.