Which statement about Puccini’s La bohème is wrong?

a. Puccini adapted Wagner’s principles of Gesamtkunstwerk in writing this opera
b. it is Puccini’s most famous opera
c. there is not much character development in the opera, instead the focus is on the glorious sound of the human
voice
d. the realism of the opera rests in the setting of the drama and its characters
e. there is a stark contrast between the dreary stage setting and the transcendental beauty of the music

a