Which is the oldest search engine of the internet?

A. WebCrawler
B. Ask
C. Yahoo
D. Google

WebCrawler (1994). Of all still-surviving search engines, WebCrawler is the oldest. Today, it aggregates results from Google and Yahoo.
Lycos (1994)
AltaVista (1995)
Excite (1995)
Yahoo (1995)
Dogpile (1996)
Ask Jeeves (1996)