You work as the enterprise exchange administrator at Company.com.The Company.com network consists of a single Active Directory domain named Company.com.Company.com has an Exchange Server 2010 organization.the Company.com contains an exchange server 2010 server named -ex11 that has imap4 installed.You have received instructions from the cio to make sure that the employees at Company.com can send e-mail with the use of smtp； however you are not allowed to do any changes to the default connectors.What should you do？（）

• A、You should consider setting the IMAP4 clients up to use TCP port 25 to send e-mail.
• B、You should consider setting up a new Send connector and set up it to use TCP port 110 to send e-mail.
• C、You should consider setting the IMAP4 clients up to use TCP port 587 to send e-mail.
• D、You should consider setting up a new Send connector and set up it to use TCP port 143 to send e-mail.