Answer (B) is correct.
To implement a just-in-time (JIT) approach to inventory management
and to eliminate waste of materials, labor, factory space, and machine
usage, the factory is reorganized to permit what is often called lean
production. Plant layout in a JIT-lean production environment is not
arranged by functional department or process but by manufacturing cells
(work cells). Central support departments are reduced or eliminated,
space is saved, fewer and smaller factories may be required, and
materials and tools are brought close to the point of use.