In triangle ABC shown below, side AB is 10 and side AC is 8: Triangle ABC with segment joining point D on segment AB and point E on segment AC. Which statement is needed to prove that segment DE is parallel to segment BC and half its length?
A - Segment AD is 5, and segment AE is 4.
B - Segment AD is 4, and segment AE is 8.
C - Segment AD is 4, and segment AE is 5.
D - Segment AD is 5, and segment AE is 2.
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