Communal property is (Multiple Choice)

Communal property is
 
  a. real or personal property usually owned by the government and often with
  broad liberty-rights for citizen use
  b. refers to real or personal property owned by some collective whose members
  have broad liberty-rights to use (but who may exclude nonmembers from the
  use of that property)
  c. creations of the mind: inventions, literary and artistic works, and symbols,
  names, images, and designs used in commerce
  d. refers to real or personal property where the owner or owners have claimrights to exclude others from the use of that property