K-U- Machine 1 2: 90 units per hour Machine 2 A: 70 units per hour Machine 3 1: 120 units per hour An assembly line uses three machines to process jobs in sequence (Parts first go to Machine 1, then to Machine 2, then to Machine 3). Production rates (X) of the machines are given in the flowchart below. Which of the following is True? Production capacity of the assembly line is 280 units per hour. To increase the production capacity of the assembly line, we need to increase the capacity of Machine 3 Machine 1 has the highest utilization. Production capacity of the assembly line is 120 units per hour. To increase the production capacity of the assembly line, we need to increase the capacity of Machine 2 o olo