AWebpageincludestheHTMLshowninthefollowingcodesegment.YouneedtowriteaJavaScriptfunctionthatwilldynamicallyformatinboldfaceallofthehyperlinksintherefspan.Whichcodesegmentshouldyouuse?()A.$（"#ref"）.filter（"a[href]"）.bold（）；B.$（"ref"）.filter（"a"）.css（"bold"）
题目
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"}）；