Mailchimp to send different emails based on input from contact form 7

Hello forum,

I would like to know if it is possible to do this:

I have an API key connecting CF7 to a Mailchimp list.
On the contact form are 4 options (for a user to request further information PDF on that topic).
I have these four separate emails created in MailChimp, but I’m struggling with finding out how to get Mailchimp to send the relevant email based on the form input, unless I have 4 forms and 4 API Keys?