Final answer:
The first artwork of pop art being a collage shows that pop art contained the influence of cubism.
Step-by-step explanation:
The statement is true. The first artwork of pop art, which emerged in the mid-1950s, was indeed a collage. Pop art borrowed its ideas and images from mass media, advertising, and popular culture. The artists incorporated everyday items and familiar cultural images, blurring the line between fine art and commercial art. The use of collage in pop art shows the influence of cubism, as cubism also incorporated collage and the fragmentation of objects.