The correct answer is: B. Input is never converted to digital form.
Analog computers are designed to process continuous data, such as temperature, pressure, or voltage. They do this by using physical components, such as resistors, capacitors, and inductors, to represent the data. The output of an analog computer is also continuous data, which can be displayed on a meter or graph.
Digital computers, on the other hand, are designed to process discrete data, such as numbers or letters. They do this by using electronic components, such as transistors, to represent the data. The output of a digital computer is also discrete data, which can be displayed on a screen or printed on paper.
In conclusion, analog computers do not convert input to digital form.