Answer:
several personnel accessing the registration system
Explanation:
batch processing is all about multiprogramming so I think the first answer is the best as it is not based on one person .I know the last answer might be almost close but on a closer look it is not the answer as it is single based as written a file
I = V/R. So the answer is 9/200 = 0.045A = 45mA which is B
