Do Army ROTC Officers wear the Army Service Ribbon for commissioning or after BOLC?

Officers will be awarded this ribbon upon successful completion of their basic/orientation or higher level course. For those officer personnel assigned a specialty, special skill identifier, or MOS based on civilian or other service acquired skills, this ribbon will be awarded upon honorable completion of 4 months active service. That is...unless....they were prior enlisted before going thru ROTC.