there are multiple questions and they correspond with one another please read them carefully

Hamilton Manufacturing wants to know how many workstations minimum will be needed to manufacture a product consisting of 20 steps and a total production time of 10 minutes. The throughput required to meet demand is 240 units per day. Assume a work day of 8 hours. O a. 4 workstations O b.5 workstations O c. 6 workstations O d. 7 workstations For Hamilton Manufacturing in the problem above, calculate the efficiency of the line if it uses the minimum number of workstations required as just calculated above taken in relation to the total production time required of 10 minutes. O a. more than 75% but less than 80% O b. more than 80% but less than 85% O c. more than 85% but less than 90% O d. more than 90%