question_answer

In a school the following codes were used during physical exercise: 1 means Start walk-ing, 2 means keep standing, 3 means start running at the same spot, 4 means sit down. How many times will a student who performs the following sequence without error from the beginning to the end have to sit down?

1 2 3 4 2 3 1 4 4 3 2 2 1 2 4 3 1 4 4 1 2

A)  2                                

B)  3

C)  4                   

D)       5