Roller Riders and Equipment (RR&E) leased bicycle equipment from Bob's Leasing. The lease said nothing about assignment. Bob's Leasing then assigned the lease to TBA as security for a loan. Bob's Leasing defaulted on it's loan, and RR&E failed to make several payments on the lease. TBA Sue's RR&E for the lease payments. Was the assignment valid, given the fact that the original lease made no mention of it. (Explain why or why not) If the assignment was valid, may RR&E raise defenses against TBA that it could have raised against Bob's Leasing