All the following sentences about Nicaraguan sign language are true EXCEPT: A. The language incorporates signs which children used at home. B. The language was perfected by younger children
All the following sentences about Nicaraguan sign language are true EXCEPT:
A. The language incorporates signs which children used at home.
B. The language was perfected by younger children.
C. The language has been created since 1979.
D. The language is based on speech and lip reading.