Read the following context and choose the best option to answer the question.
Context: The slide and 3 ft pool it goes into are lots of fun . Mateo loves the slide , but I have to go down with him . Hopefully by next year he 'll be able to go down himself and I can just catch him at the bottom .
Question: Why Ca n't mateo go down the slide alone
Options: 
A. None of the above choices .
B. He does nt like the pool
C. He does n't want to
D. He ca n't swim


D