Commercial Credit Company has in its possession an instrument dated May 1, 2012. The instrument is payable to the order of Alpha Company on June 1, 2013, for $5,000. In the upper left corner is an address for Beta Corporation10 Corporate Park Avenue, Chicago, Illinoisand in the lower right corner is the signature of Delta, Inc., By Eve, President. In the lower left corner is stamped ACCEPTED: Beta Corporation by Frank, President, May 5, 2012. On the back is the signature of Alpha Company By Gail, President. Who, if anyone, is primarily liable on this instrument on May 1? On May 5? Who, if anyone, is secondarily liable on this instrument?