vocabulary is a repeating decimal a rational number?

a. no because it cannot be written in form of a/b where a and b are intergers and b=0

b. no because it cannot be written in form a b where a and b are integers.

c. yes because it can be written in the form a/b where a and b are integers are b=0

d yes because it can written in the a.b where a and b integers.​