Wilhelm Is Being Raised in a Bilingual Environment, Learning to Speak

Wilhelm is being raised in a bilingual environment, learning to speak both German and French before the end of the critical period. Assuming Wilhelm has equally mastered both languages, what you would most likely discover when Wilhelm is in junior high?

A) He is having difficulty switching from German to French and from French to German.
B) He is superior to his classmates in cognitive flexibility and creativity.
C) He is inferior to his classmates in cognitive flexibility and creativity.
D) He has more trouble learning arithmetic than his classmates.