Which of the following is the MOST cost-efficient way to discourage theft of laptops?

A company is receiving a large number of laptop theft reports in the corporate buildings.
Which of the following is the MOST cost-efficient way to discourage theft of laptops?

A.
A CCTV system

B.
A cable lock

C.
A badge reader

D.
A retina scanner

Explanation:

http://www.pcworld.com/article/251719/how_to_protect_your_laptop.html