Client SSL Authentication

I got certificate from Client (Bank) which is self signed by openssl from Client LAPTOP. then how can have find root CA to select or how can I find CA as it was self signed.

isn't ca client certificate itself (because it is self-signed)?

[root@centos1 ~] openssl x509 -in client_a.crt -noout -subject -issuer
subject= /C=GB/ST=Berkshire/L=Newbury/O=My Company Ltd
issuer= /C=GB/ST=Berkshire/L=Newbury/O=My Company Ltd

when I enable ' Client Certificate' > to ignore it works but when I enable ' Client Certificate' to require, it does not work

e.g.

 configuration

root@ve10(Active)(tmos) list ltm virtual bar
ltm virtual bar {
    destination 172.28.24.9:https
    ip-protocol tcp
    mask 255.255.255.255
    pool foo
    profiles {
        myclientssl {
            context clientside
        }
        serverssl {
            context serverside
        }
        tcp { }
    }
    snat automap
}
root@ve10(Active)(tmos) list ltm profile client-ssl myclientssl
ltm profile client-ssl myclientssl {
    ca-file client_a.crt
    defaults-from clientssl
    peer-cert-mode require
}

 self-signed certificate

[root@ve10:Active] config  openssl x509 -in /config/ssl/ssl.crt/client_a.crt -noout -subject -issuer
subject= /C=GB/ST=Berkshire/L=Newbury/O=My Company Ltd
issuer= /C=GB/ST=Berkshire/L=Newbury/O=My Company Ltd

 test

[root@centos1 ~] curl -Ik https://172.28.24.9/ --cert client_a.crt --key client_a.key
HTTP/1.1 200 OK
Date: Sun, 16 Nov 2014 05:28:56 GMT
Server: Apache/2.2.3 (CentOS)
Last-Modified: Sun, 09 Feb 2014 08:39:51 GMT
ETag: "41879c-59-2a9c23c0"
Accept-Ranges: bytes
Content-Length: 89
Content-Type: text/html; charset=UTF-8