Triangle DEF is rotated 180 degrees about the origin to form triangle D'E'F'.What are the coordinates of the vertices of triangle D'E'F'? D' (–1, –4); E'(–2, –1); F'(–1, –5)

D' (4, 1); E'(1, 2); F'(5, 1)

D' (1, –4); E'(2, –1); F'(5, –1)

D' (4, –1); E'(1, –2); F'(1, –5)

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .