[单选题]
Both the pressure an,c4mbbytcl )6d volume of a gvwj rq8ox jw+03go8 w5iven sample of an ideal gas double. This means that its temperaturr w3+q o85j vg8j0oxwwe in Kelvin must
A. double.
B. quadruple.
C. reduce to one-fourth its original value.
D. remain unchanged.
