Which of the following best completes the passage below?
An ancient scripture, about 3500 years old, was deciphered by experts revealing it to be the account of a barter between two tribes. Verified by concurring evidence, the account describes how the Ngebono tribe promised military assistance in exchange for 200 musical instruments, believed to be vital accessories for tribal ceremonies, which were supplied by the Vergiba tribe. However, it has been proven that the latter tribe did not have the technological knowledge to manufacture any items other than ceramic vessels until 2000 years ago so __________.
A. no remnants of the original instruments have been found because of the primitive clay mixture and firing process that was used for their production
B. the instruments were probably not functional, resulting in a lengthy and violent war between the two tribes
C. the account was probably fictitious and was created to cease later hostilities by showing how cooperation could benefit both tribes
D. it is extremely likely that the barter did not actually take place, and that the idea was eventually discarded
E. the musical instruments were probably based on such vessels, with whatever adaptations required to allow them to be used as musical instruments