Does someone qualify for the CIB for deploying as an 11B without being MOS qualified?

I have a soldier who volunteered for a deployment as an 11B but is still technically 12B and came back asking if he should have the CIB. I told him i didnt think so but that I'd research for him. Since he was "infantry" on the deployment and with an infantry unit and perfomed the tasks of an Infantrymen does he qualify for the CIB or just the CAB? Since my knowledge on the CIB is limited to what I've read any input would be appreciated.