Which of the following is NOT included as central assumptions of social constructionism in Gergen (2008)? ( )

A、Ourknowledgeisadirectperceptionofreality.
B、Thewayinwhichweunderstandtheworldisnotrequiredby“whatthereis”.
C、Thewaysinwhichwedescribeandexplaintheworldaretheoutcomesofrelationship.
D、Constructionsgaintheirsignificancefromtheirsocialutility.