Answer (B) is correct . The constraint is the part of a process that holds up the rest of the process. Since Bombastic Bathrooms is producing equal quantities of the four fixtures, the machining department is the bottleneck. It requires a total of 19 hours for one of each model to move through. The boring department requires 18, finishing 11, and inspection & packing 4.
Answer (A) is incorrect because Boring only requires 18 hours for one of each model fixture to pass through. Answer (C) is incorrect because Finishing only requires 11 hours for one of each model fixture to pass through. Answer (D) is incorrect because Inspection & packing only requires 4 hours for one of each model fixture to pass through.
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