Armed with an opinion from financial advisor Goldman Sachs & Co that the $13.50 a share tender offer from Prime Computer Inc was inadequate, the board of Computervision Corp, Bedford, Massachusetts, finally responded to the bid on Friday by unanimously rejecting Prime’s offer. Computervision instructed management to work with advisors to explore alternatives, which exclude merger with another company or the acquisition of a substantial business that would put the enlarged Computervision out of Prime’s reach. It will also oppose any move – threatened by Prime – to solicit consents to replace directors with Prime nominees to facilitate consummation of the proposed takeover.