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單項選擇題

All of your JSPs need to have a link that permits users to email the web master. This web application islicensed to many small businesses, each of which have a different email address for the web master. Youhave decided to use a context parameter that you specify in the deployment descriptor, like this:
42.<context-param>
43.<param-name>webmasterEmail</param-name>
44.<param-value>master@example.com</param-value>
45.</context-param>
Which JSP code snippet creates this email link?()

A.<a href=’mailto:${contextParam.webmasterEmail}’>contact us</a>
B.<a href=’mailto:${applicationScope.webmasterEmail}’>contact us</a>
C.<a href=’mailto:${contextInitParam.webmasterEmail}’>contact us</a>
D.<a href=’mailto:${initParam.webmasterEmail}’>contact us</a>

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