_____ automatically the e-mail will be received by all the club members.

A. Mailed out                          B. Mailing out                        

C. To be mailed out           D. Having mailed out

_________ automatically, the e-mail will be received by all the club members．

1. A.
   Mailed out
2. B.
   Mailing out
3. C.
   To be mailed out
4. D.
   To mail out