Which is the correct sequence for entering data into a computer and obtaining a result?

Correct answer: Input then processing then output

The governing concept is the basic IPO cycle of a computer. First, the user supplies input such as numbers or text. Next, the processor applies instructions to organise or calculate that input. Finally, the system produces output such as a total or displayed answer. Thus option A is correct. Output cannot normally be produced before the required input and processing, while the other sequences confuse separate activities with the main working cycle.