JIT makes quality cheaper because:

a. the cost of low quality can be hidden as inventory cost.
b. JIT adds more buffers to the system.
c. JIT prevents long runs of defects.
d. JIT adds more buffers to the system
e. JIT prevents long runs of defects the cost of low quality can be hidden as inventory cost.
f. JIT adds more buffers to the system and JIT prevents long runs of defects

JIT prevents long runs of defects

Explanation:

Just in time (JIT) is a method regarding inventory management whereby materials, goods, and labor are made available at the time of production process which results in reduction in inventory costs. JIT exposes any bad quality of materials or goods.

It used a pull system to move inventory and it delivered goods directly to the point of use.

So, JIT prevents long runs of defects.

a) both were commissioned explorers