Hi Folks,

Can anyone help with Q. 52 GR058. For reference, the question is:

Q. If "A" is a subset of the real line "R", and "A" contains each rational number, which of the following must be true?

A. If "A" is open, then "A" = "R"

B. If "A" is closed, then "A" = "R"

C. If "A" is uncountable, then "A" = "R"

D. If "A" is uncountable, then "A" is open

E. If "A" is countable, then "A" is closed.

Thanks,