Montao Manufacturing is considering a purchase of robots to automate their manufacturing system. Vicente Montao, MM's CEO, has gathered the following data for six robots he is considering. Given that all other factors are equal, which machine should Mr. Montao purchase based on system availability? MTTR (Hr) 4 3 6 8 Provider MTBF (Hr) Captain Marvel 60 Mary Marvel 36 Freddy Freeman 24 Eugene Choi 72 Pedro Pea 90 Darla Dudley 100 Mary Marvel Captain Marvel Eugene Choi Pedro Pea Darla Dudley Freddy Freeman 11