Question: At what company were Meucci's prototypes supposedly lost?
Answer: Meucci's work, like many other inventors of the period, was based on earlier acoustic principles and despite evidence of earlier experiments, the final case involving Meucci was eventually dropped upon Meucci's death.
A single-select problem: Is the question answered in a satisfactory fashion?

Pick from:
(A). yes;
(B). no;
(B).