An algorithm allows a teacher to enter a student's test score as an integer.
The purpose of the algorithm is to output whether the student has "Pass" (if the score is 50 or above) or "Fail" (if the score is below 50).
Below is an incomplete flowchart for this algorithm with four missing steps labelled A, B, C, and D.

Complete the flowchart by stating the correct input, decision, or output operation that belongs in each lettered box: