Losing time! We're losing time!

Hurry back to the assembly line.
Conveyor belts will come to you.
Place the bolt, turn the wrench!
Place the bolt, turn the wrench!
This is our instruction
In the grind of mass production.
What do the two lines "Place the bolt, turn the wrench!" contribute to the poem?
A. They create poetic imagery by comparing bolts to wrenches.
B.They emphasize the repetitive nature of assembly line work.
C. They describe how to repeat the process of using a wrench.

B. They emphasize the repetitive nature of assembly line work.