 
			 
			MCQOPTIONS
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				| 1. | Given points, A, B, C, and D lie in and on the ellipse, and the relation they hold is AB + BC = AD + CD, in which two points lie on the curve. Find the focus points of the ellipse? | 
| A. | A, B | 
| B. | B, C | 
| C. | A, C | 
| D. | A, D | 
| Answer» D. A, D | |