Which of the following statements (a,b,c,d) about synchronous production (theory of constraints) is not true?

A. The communication system between the bottleneck and the first of the non-bottleneck processes preceding the bottleneck is called the rope.

B. A firm should work to increase throughput while also reducing inventory and operating expenses.

C. Synchronous production paces the entire production process by the bottlenecks.

D. A buffer of inventory should always be maintained immediately after a bottleneck process, to ensure sufficient supply of items produced by the bottleneck.

E. all of the above (a,b,c,d) are true statements about synchronous production.