In Research Conducted by Sodian and Kristen-Antonov (2015) Which Provided

In research conducted by Sodian and Kristen-Antonov (2015) which provided evidence consistent with the position that joint attention and referential communication are necessary skills in the development of more advanced forms of theory of mind. What was indicated in their short-term longitudinal study where they assessed infants on a series of social-cognitive tasks from 12 to 50 months?

A) They reported that 12-month-old infants' imperative pointing predicted children's performance well before 50 months.
B) Tasks garnered at 50 months were a direct result of the infants' ability to predict how well they imperatively point.
C) They reported that 12-month-old infants' declarative pointing-intended to convey information about a target object and thus a form of referential communication-predicted children's performance on theory-of-mind tasks at 50 months.
D) Nothing could be determined with regard to social-cognitive tasks as this does not appear until after the age of 60 months.