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Exit VCEDump CRT-450 Salesforce Certified Platform Developer I (CRT-450)

Q37 Single choice

A developer has an Apex controller for a Visualforce page that takes an ID as a URL parameter.

How should the developer prevent a cross site scripting vulnerability?

A
ApexPages.currentPage().getParameters().get('url_param')
B
String.escapeSingleQuotes(ApexPages.currentPage().getParameters().get('url_param'))
C
String.ValueOf(ApexPages.currentPage().getParameters().get('url_param'))
D
ApexPages.currentPage().getParameters().get('url_param').escapeHtml4()

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