Which group of instruments was best suited for chamber music?

Alban Berg's opera Wozzeck resembles the expressionist style

Indicate whether the statement is true or false

Guitarist Tiny Grimes's 1944 recordings of "Red Cross" were particularly important because they

a. featured the first recordings of a bebop guitarist b. were the first small-group recordings of trumpeter Dizzy Gillespie c. featured Charlie Parker's first recorded solos over rhythm changes d. featured the early crystallization of Bud Powell's bebop playing