1-97Ron Works as a Custodian's Helper at a School,under Supervision

1-97.Ron works as a custodian's helper at a school,under supervision of the custodian.Ron can read and write his name,and can read first-grade books.He moves slowly and sometimes with difficulty.Ron most likely has

A) mild intellectual disability.
B) moderate intellectual disability.
C) severe intellectual disability.
D) profound intellectual disability.