Which of the Following Distinguishes Constructivism from Social Constructivism

Which of the following distinguishes constructivism from social constructivism?

A) Only social constructivism emphasizes the social context of knowledge construction.
B) Only social constructivism focuses on students' active construction of knowledge.
C) While both stem from the work of Lev Vygotsky, only constructivism more generally emphasizes that knowledge is contextually embedded.
D) While both stem from the work of Jean Piaget, only constructivism more generally emphasizes that knowledge is contextually embedded.