How would you prevent Google from storing your search keywords?

Google uses a unique cookie for each browser used by an individual user on a computer. This
cookie contains information that allows Google to identify records about that user on its database.
This cookie is submitted every time a user launches a Google search, visits a site using AdSense
etc. The information stored in Google’s database, identified by the cookie, includes
Everything you search for using Google
Every web page you visit that has Google Adsense ads
How would you prevent Google from storing your search keywords?

A.
Block Google Cookie by applying Privacy and Security settings in your web browser

B.
Disable the Google cookie using Google Advanced Search settings on Google Search page

C.
Do not use Google but use another search engine Bing which will not collect and store your
search keywords

D.
Use MAC OS X instead of Windows 7. Mac OS has higher level of privacy controls by default.