Each of the three people individually can complete a certain job in 4, 6, and 8 hours, respectively. What is the lowest fraction of the job that can be done in 1 hour by 2 of the people working together at their respective rates?  Choose the correct option:
A) 3/8	B) 5/12	C) 7/24	D) 11/36	E) 13/48
The two slowest people work at rates of 1/6 and 1/8 of the job per hour.   The sum of these rates is 1/6 + 1/8 = 7/24 of the job per hour.   The answer is 7/24.
<result>C</result>
Each of the three people individually can complete a certain job in 4, 6, and 8 hours, respectively. What is the lowest fraction of the job that can be done in 1 hour by 2 of the people working together at their respective rates?