Task Predecessor -- J K L M Time (sec) 45 50 40 55 N J J KL M M N O, P 40 65 25 35 O P R The process design team at a bicycle manufacturer has broken an assembly process into eight basic steps, each with a required task time and predecessor (if appropriate) as shown in the table. There are 8 productive hours (or 28,800 seconds) available in a day, and the manufacturer wishes to produce 400 units. Use this information to answer the following question: What is the theoretical minimum number of workstations needed if the line is balanced using the appropriate takt time? O five O four o seven O six