Figure 15-1 the Following Information Relates to Lancashire Manufacturing: to Produce a Produce

Figure 15-1
The following information relates to Lancashire Manufacturing: To produce a unit of product:
Mixing department 3 minutes per unit
Molding department 5 minutes per unit
Casting department 7 minutes per unit
Finishing department 4 minutes per unit
There is a wait time of 8 minutes before the mixing department begins a batch, 5 minutes between the mixing and molding departments, a move and pre-wait between molding and casting of 10 minutes, and a move and pre-wait between the casting and finishing departments of 12 minutes.
-Refer to Figure 15-1. Which area represents the bottleneck operation?

A) finishing
B) casting
C) molding
D) mixing