premise: A contractor is scheduling construction of seven decks—F, G, H, J, K, L, and M—during a seven-week period: week 1 through week 7. Because of customers' requirements, exactly one deck must be built each week according to the following conditions: G must be built at some time before K is built. L must be built either immediately before or immediately after M is built. F must be built during week 5. J must be built during week 2 or week 6. Which one of the following is a complete and accurate list of the weeks any one of which could be the week in which K is built?
hypothesis: 1, 2, 3, 6, 7