All of the Following Statements About the Acquisition of Grammar

All of the following statements about the acquisition of grammar are correct except

A) children's early two-word utterances communicate a range of meanings, such as agent + action ("Daddy eat") and action + object ("Eat cookie")
B) the order of words in children's two-word utterances usually does not vary
C) many children go through a stage in which the combination of words in two-word utterances seems to be random, resulting in a roughly equal number of phrases like "eat cookie" and "cookie eat"
D) even before they are 2 years old, children are able to infer meaning from grammatical markers such as word order