What is the domain and range of f(x) = cos(x)?

A) The domain is all real numbers and the range is -1< y < 1
B) The domain is -1 < x < 1 and the range is all real numbers.
C) The domain is all real numbers and the range is -1 y 1
D) The domain is all real numbers and the range is -1 < x < 1
 
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