The State of California Told the Owners of a Beach-Front

The state of California told the owners of a beach-front house that, before it would issue a building permit to allow expansion of the house, the owners had to agree to allow public use of their beach property. The Supreme Court held that this:

A) was a proper use of state police power
B) was a proper use of state regulatory power for "the public welfare"
C) regulation of beach land was consistent with federal law and so was permissible
D) was an unjust taking of property without compensation
E) regulation was inconsistent with existing federal law and so was stricken