The Study of Reader & Laland (2002) Found That 'Executive

The study of Reader & Laland (2002) found that 'executive' brain size increases amongst primates were related to:

A) Social learning but not innovation (e.g. tool use)
B) Neither social learning nor innovation (e.g. tool use)
C) Both social learning and innovation (e.g. tool use)
D) Innovation (e.g. tool use) but not social learning