Uploading SSL certificates TO IAM

I have 4 certificates which i received from CA (SSL) : Root CA Certificate - 123.crt Intermediate CA Certificate - 456.crt Intermediate CA Certificate - 789.crt Your PositiveSSL Certificate - 654.crt and also i have generated circuit.pem -private key and csr.pem trhough which i got these certifcates. Now, i want to upload these certificates to IAM using

aws iam upload-server-certificate --server-certificate-name certificate_object_name --certificate-body http://filepublic_key_certificate_file --private-key file://privatekey.pem --certificate-chain http://filecertificate_chain_file 

http://ift.tt/1l44Idm

But i am not able to gauge which is my server certificate and how can i upload my all certificates. Please help me with the above command for my above certficates.