<span>An upper gastrointestinal (GI) series can be cancelled by
doctors when they notice that you have recently drank or eaten. As a rule, patients should not be allowed to
eat, drink, smoke or even chew gum before their GI series so that doctors will
be able to clearly see your upper GI tract.</span>
The correct answer is D) The remote control transmits information through waves, such as infrared waves, to the television. Therefore a remote needs to be pointed at the tv in order to work.
