Which of the following statements about the use of art to enhance royal authority in the kingdom of Benin is LEAST accurate?

A) For a time,the kings of Benin controlled the use of all copper within their realm,and ensured that it was used to celebrate their authority.
B) Commemorative art in Benin demonstrated the use of the physical head as a symbol of royal qualities.
C) Commemorative altars in Benin included brass representations of the heads of Benin's queen mothers.
D) Benin's kings were entombed in large pyramidal structures which were adorned with copper plaques celebrating their achievements.