Which of the following links the phrase "Click here" to the city.cgi script?
a. KA HREF="http://yourservername/cgi-bin/chap02/city.cgi"> Click here $\langle/ \mathrm{A}\rangle$
b. KA IINK="hteR: /yoyeseryername/cgi-bin/chapo2/city"> Click here $\langle/ \mathrm{A}>$
c. $<$ A fIINK="bftp: /yourservername/cg1-Din/chap02tcity.egi"> ilick hete $>$ A
d. $\mathrm{A}$ / R?EF=/http: / yourservername/cgi-bin/chap02/city.cq is Click bere":<xas