What Is the Relationship,if Any,between Language Comprehension and Language Production

Multiple Choice

What is the relationship,if any,between language comprehension and language production among young children in the "first words" stage?

A) There is no systematic relationship between language comprehension and language production at this point: It varies from child to child.
B) Language comprehension generally exceeds language production at this stage.
C) Language comprehension generally lags language production at this stage.
D) Language comprehension ability is generally equivalent to language production ability at this point.