Jack and Jill work at a hospital with 6 other workers. For an internal review, 2 of the 8 workers will be randomly chosen to be interviewed. What is the probability that Jack and Jill will both be chosen?  Choose the correct choice from the following answers
A) 1 / 3  B) 1 / 4  C) 1 / 15  D) 1 / 28  E) 2 / 3

Rationale: "1 / 8 c 2 = 1 / 28 . answer : d ."
Answer: D