In the ________ model, the user has control over the applications but has limited or no control over the underlying infrastructure

Which sentence is preferable?

A) Everyone did his work quietly. B) Each person did their work quietly. C) Everyone did their work quietly. D) Everyone worked quietly.

What is the correct distribution for simulating the outcome of a single coin?

A) continuous uniform B) triangular C) binomial D) exponential E) normal