Which is NOT a valid scheme on the match tab of a wild card URI definition?

Which is NOT a valid scheme on the match tab of a wild card URI definition?

A.
http

B.
ftp

C.
gopher

D.
mailto

E.
news

F.
smtp

Explanation:

: If you see the Match tab in the properties of an URI resource that is working with “wild cards”
matching, we can see the following schemes: HTTP, FTP, GOPHER, MAILTO, NEWS, WAIS and
a option to specify “others”. We don’t have a checkbox to select SMTP. You can check this is
Figure 9 at page L8.19 of CCSE NG Official Courseware. (VPN1-FW1 Management II NG FP-1) .