Displays text on a Visualforce page. You can customize the appearance of <apex:outputText>
using CSS styles, in which case the generated text is wrapped in an HTML <span> tag. You can
also escape the rendered text if it contains sensitive HTML and XML characters. This component
does take localization into account.
Use with nested param tags to format the text values, where {n} corresponds to the n-th nested
param tag. The value attribute supports the same syntax as the MessageFormat class in Java.
See the MessageFormat class JavaDocs for more information.
Warning:Encrypted custom fields that are embedded in the <apex:outputText> component display
in clear text. The <apex:outputText> component doesn’t respect the View Encrypted Data
permission for users. To prevent showing sensitive information to unauthorized users, use the
<apex:outputField> tag instead.

A.
apex:message

B.
apex:actionSupport

C.
apex:column

D.
apex:outputText