In each of the following question, a conclusion is given followed by two statements labelled A and B. Give your answer as:
(a) if statement A alone is needed to draw the conclusion,
(b) if statement B alone is needed to draw the conclusion,
(c) if both A and B are needed to draw the conclusion,
(d) if both A and B are not sufficient to draw the conclusion.
Shaving is smoother if some soap is applied with warm water.
A: Brushing the soap to make lather increases the time it takes to shave.
B: The face also gets a wash as it is shaved.

Answer

A