שאלה | Which of the following is incorrect about the LANA project (teaching Lana "Yerkish")?

Which of the following is incorrect about the LANA project (teaching Lana "Yerkish")?

		If Lana saw that she had made a mistake in either lexigram selection or in the order, she attempted to try again
		The researchers could not clearly determine whether Lana learned the lexigrams' positions and not the lexigrams themselves
		It turned out that Lana was able to "read" the lexigrams themselves
		When Lana was about 5 and a half years old, her vocabulary consisted of about 100 lexigrams