In the given situation, which one of the instructions is correct?Having pressed the blue button, you have to enter the code, and then press the red button.

A、Presstheblueandredbuttonsandenterthecode;
B、Enterthecode,thenpresstheredbutton,andfinallypressthebluebutton;
C、Pressthebluebutton,thenenterthecode.Finally,presstheredbutton;
D、Presstheredbutton,thenenterthecode.Finally,pressthebluebutton