The author implies that one way that VHS producers won control over the VCR market was by______
A. carefully restricting access to VCR technology
B. giving up a slight early lead in VCR sales in order to improve long-term prospects.
C. retaining a strict monopoly on the production of prerecorded videotapes.
D. sharing control of the marketing of VHS-format VCR’s
E. sacrificing technological superiority over Betaformat VCR’s in order to remain competitive in price.