AWebpageincludestheHTMLshowninthefollowingcodesegment.YouneedtowriteaJavaScriptfunctionthatwilldynamicallyformatinboldfaceallofthehyperlinksintherefspan.Whichcodesegmentshouldyouuse?()

A、$（"#ref"）.filter（"a[href]"）.bold（）；

B、$（"ref"）.filter（"a"）.css（"bold"）；

C、$（"a"）.css（{fontWeight："bold"}）；

D、$（"#refa[href]"）.css（{fontWeight："bold"}）；

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