The Trim method returns a string that excludes any leading or trailing spaces.

Which of the following situations would be the best environment for use of a symmetric cryptosystem?

a. Corporate e-mail system b. Site-to-site VPN c. Certificate authority d. Web site certificates

The logarithmic big-O value is ____.

A. O(1) B. O(n) C. O(log n) D. O(n log n)