What is the activity slack time, time cost, and cost per week for each activity? A) A: 0, 7, $400 B) B: 1, 12, $1,000 C) C: 0, 7, $800 D) D: 0, 6, $600 E) E: 0, 8, $1,200 F) F: 9, 3, $800 G) G: 9, 3, $500 H) H: 0, 4, $400