Historians have established that Charles the III regretted the（）his treasury, the consequence of several expensive war campaigns, but he nevertheless trusted that he would find（）in his struggle against the king of France.

A．searching for an accurate method of determining whether the universe is finite or infinite
B．discussing problems and possibilities involved in providing a definite picture of the shape of the universe
C．declaring opposition to the notion that spherical geometry is a possible model for the shape of the universe
D．criticizing discredited theories about the possible topologies of the universe
E．refuting the idea that there is no way to tell whether the universe is finite and if so what shape it has

A．After laboratory experiments, scientists discover evidence to reject the notion hat the human appendix is a "vestigial" organ.
B．Certain animal species which had not previously been given attention are to possess an appendix resembling that of humans.
C．Lymphoid tissue is discovered, after careful study, not to play a role in the recognition of foreign antigens in ingested material.
D．After re-examination of the evidence, ulcerative colitis is discovered to be caused by factors wholly unrelated to the human appendix.
E．It is discovered that in rabbits, hindgut fermentation does not require the presence of an organ acting as reservoir for bacteria.