Use the Information Below to Answer the Following Question

Use the information below to answer the following question.
Fact 10.2.2 A Medical Sensation
Hospitals are buying da Vinci surgical robots. Surgeons, sitting comfortably at a da Vinci console, can use various robotic attachments to perform even the most complex procedures.
Source: Fortune, April 28, 2008
-Refer to Fact 10.2.2. Assume that performing a surgery with a surgical robot requires fewer surgeons and nurses. Using the surgical robot ________ technologically efficient. We would need additional information about ________ to determine if switching to surgical robots is economically efficient for a hospital.

A) is not; the cost of surgery with a surgical robot and the cost of surgery without a surgical robot
B) is not; the success rate of operations with surgical robots compared to the success rate of operations using other methods
C) is; the success rate of operations with surgical robots compared to the success rate of operations using other methods
D) is; the cost of surgery with a surgical robot and the cost of surgery without a surgical robot
E) is not; clinical trials