If 6 points are indicated on a line and 8 points are indicated on another line that is parallel to the first one...

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If 6 points are indicated on a line and 8 points are indicated on another line that is parallel to the first one, how many quadrilaterals can be formed whose vertices are among the 14 points?

A. 42
B. 43
C. 420
D. 1001
E. 1680

OA C
Source: — Problem Solving |