There are several comments in JSP? ? ?

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Reference: https://zhidao.baidu.com/question/367638126045763924.html
Title:

9, the Notes which of the following is not in JSP (). A

A. B. / Footnotes /

C. // footnotes D. / footnotes /
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Notes kinds:
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1. The first comment:

This is HTML / XML's original comments will be sent to the client honestly, what people can not see do not use this to write

2. The second comment:
<% - Comment content -%>
had <%%> things that are written JSP application server to see, will not be sent to the client. The compiler will ignore it, html also missed its meet, sideline the application server. This comment feel more redundant, do not know specifically what they engage in a such a comment.

3. The third NOTE:
<%
@ When line comments
/ *
multi-line comment
* /
%>

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