What are the melodic instruments in a Dixieland ensemble called?

In 1843, the African-American reformer, Isabella Bomefree, adopted the name ___________.

Fill in the blank(s) with the appropriate word(s).

Which instrument was often added to chamber ensembles, such as string trios and quartets, by composers of the 19th century?

A) harpsichord B) French horn C) flute D) piano