Which statement is true about a number and its additive inverse?
a. their product is always greater than one.
b. their sum is always greater than zero.
c. their sum is always zero.
d. their product is never less than one.

Circle d circumscribes abc and abe. which statements about the triangles are true? statement i: the perpendicular bisectors of abc intersect at the same point as those of abe. statement ii: the distance from c to d is the same as the distance from d to e. statement iii: bisects cde. statement iv: the angle bisectors of abc intersect at the same point as those of abe. a. i only b. i and ii c. ii and iv d. i and iii e. iii and iv