Which of the following fractions can be written as the difference of reciprocals of two consecutive integers	Choose the most appropriate option:
A) 1/24	B) 7/30	C) 1/42	D) 13/56	E) 1/73
Difference of reciprocals means 1 has to be in the numerator;   So option BD can be ignored   For option A, BE, we require to search two consecutive numbers whose product is the denominator   24 = 4 * 6 ......... Ignore   42 = 6* 7 ........ Answer   73 = 6 * 9 ................ Ignore   Answer = 1/42
<result>C</result>
Which of the following fractions can be written as the difference of reciprocals of two consecutive integers