Explanation:
area = length*width
area = (1/4)*(2/3)
area = (1*2)/(4*3)
area = 2/12
area = 1/6 of a square inch
This confirms that choice A is a correct set of dimensions to lead to an area of 1/6 of a square inch.
Choice B leads to (1/3)*(1/3) = 1/9 which means we can rule it out.
Choice C leads to 1/36 and choice D leads to 1/24.