HTMLサーバーのレスポンスをキャッシュしないようにクライアントのブラウザーに指示するiRuleはどれか。
A. when HTTP_REQUEST { if {[HTTP::header Content-Type] equals "html"} } { HTTP::header insert Expires "Fri 01 Jan 1990 00:00 GMTHTTP::header insert Pragma "no-cache" HTTP::header insert Expires "Fri, 01 Jan 1990 00:00:00 GMT" HTTP::header replace Cache-Control "no-cache,no-store,must-revalidate" } { {[HTTP::header Content-Type] equals "html" } { HTTP::header insert Pragma "no-cache" HTTP::header insert Expires "Fri, 01 Jan 1990 00:00:00 GMT}
B. when HTTP_REQUEST { if {[HTTP::header Content-Type] contains "html"}
C. when HTTP_RESPONSE { if {[HTTP::header Content-Type] contains "html"}
D. when HTTP_RESPONSE { if {[HTTP::header Content-Type] equals "html"}