1975: What Was the FCC's "Cross-Ownership" Rule

1975: what was the FCC's "cross-ownership" rule?

A) Prohibited TV companies from owning both UHF and VHF stations in the same market.
B) Prohibited an AM, FM or TV station from acquiring another station in the same market.
C) Prevented a corporation from owning more than 2 of each AM FM and TV.
D) Barred joint ownership of newspaper, TV and radio station in the same market