Same Case as #9: Karen Soapsuds runs an office supply store that also performs simple office services, such as copying. It is time to purchase a new high-speed copier and Karen has learned that machine uptime is a critical factor in selection. She has gathered the following data on reliability and maintainability for the three copiers she is considering. What is the System Availability of the winning machine? MTBF (Hr) 40 Machine Brand Able Copy Business Mate Copy Whiz MITR (Hr) 1 4 80 240 8 Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a 0.9756 or 97.56% b 0.9824 or 98.24% 0.9954 or 99.54% d 0.8854 or 88.54% e 0.7892 or 78,92%