How should Mr. King rewrite the first line to correct the errors in that line?

Mr. King is trying to correct the following ASP code:
<%
If len(S)=0 Then(S)=’&nbsp;’
If i=0 then
Response.Write(‘ <a hrep = AspADO2.asp’?’AUID=’ & S & ‘>’ & s & ‘</a>’)
else
Reponse.Write(S)
end if
%>
How should Mr. King rewrite the first line to correct the errors in that line?

A.
If len(S) = 0 then (S) = “&nbsp;”

B.
If len(S)=0 Then (S)=’&nbsp:’

C.
If len(S) = 0 Then S = “&nbsp;”

D.
If len(S) = 0 Then S = &nbsp;