Differences In, and Competition Over, Technical Standards ______

Differences in, and competition over, technical standards ______.

A) caused the FCC to temporarily ban any new TV licenses in the late 1940s and early 1950s
B) meant that it took over a decade before all three of the major networks started broadcasting in color in the mid-1960s
C) resulted in a "war" between the Beta and VHS formats of home videocassette recorders
D) resulted in a "war" between Blu-ray and HD DVD formats for high-definition movie recordings
E) All of the options are correct.