Triangle DEF has vertices of D(-7,-1),E(-7,-8), and F(1,-8) Which of these statements is true about sides DE and EF?
A.
Side EF has a length of 6 units and is longer than side DE.
B.
Side DE has a length of 7 units and is longer than side EF.
C.
Side EF has a length of 8 units and is longer than side DE.
D.
Side DE has a length of 9 units and is longer than side EF.