The LCM of the two numbers is 143 times their HCF. If both the numbers are 3 digit numbers and their HCF is 18, then what is the sum of the reciprocals of those two numbers?
1
\(\dfrac{4}{429}\)
2
\(\dfrac{5}{286}\)
3
\(\dfrac{5}{143}\)
4
More than one of the above
5
None of the above