Identify the Correct Developmental Sequence for Speech, from Earliest to Latest

Multiple Choice

Identify the correct developmental sequence for speech, from earliest to latest, according to Lev Vygotsky's sociocultural theory:

A) private speech :: social speech :: inner speech.
B) social speech :: private speech :: inner speech.
C) inner speech :: social speech :: private speech.
D) inner speech :: private speech :: social speech.