Compared to the old equipment used by factory workers to assemble circ

Question

Compared to the old equipment used by factory workers to assemble circuit boards, the new equipment allows for faster assembly by allowing the worker to rotate the board 360 degrees in any direction. Therefore, by replacing the old equipment with this new equipment, factories will quickly realize cost savings.    1 
 Which of the following, if true, most undermines the argument?

A. Workers who use both the old and new equipment report greater difficulty switching to the old equipment from the new equipment than switching to the new equipment from the old equipment.
B. Manufacturing costs for the new equipment are similar to those for the old equipment.
C. The number of factories that use the new equipment has increased every year for the past 5 years.
D. The more time an employee has spent using the old equipment, the more expensive it is to teach that employee to use the new equipment.
E. New workers can learn to use the new equipment in the same amount of time that it takes them to learn to use the old equipment.

Rohit1988 · Answer

The timer icon is not clickable. This is happening for all RC questions.

Sajjad1994 · Answer

Hi Rohit1998

After starting the time when we click on the answer choices buttons it saves the data but do not blink the way it do in the GMAT forums. The timer is working fine the difference is it did not blink when we click on the answer.

Thank you

Rohit1988 · Answer

In my case the timer does not start at all. That button remains frozen. This is happening only with CR and RC questions but is working well for TC and SE questions.

Sajjad1994 · Answer

Strange! this should not happen. Try clearing cache memory/history and refresh your browser. This could be a possible solution but the timer is working fine.

Sajjad1994 · Answer

Official Explanation

If it is more expensive to teach workers to use the new equipment if they have spent a long time using the old equipment, then this undermines the argument that switching to the new equipment will quickly allow factories to realize cost savings since, initially, there will be expenses associated with the teaching. 
 
  Answer: D

Compared to the old equipment used by factory workers to assemble circ

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