The points (3, 24) and (7, 56) represent points of a function where y, the number of photographs, varies directly with x, the number of pages in an album. Which statement describes another point on the graph of this function?
A
A 50-page photo album holds 400 photographs.B
An 80-page photo album holds 560 photographs.C
A 100-page photo album holds 8,000 photographs.D
A 900-page photo album holds 8,400 photographs.