Your answer is correct. Choice B...
Franz Schubert <span>defied the tonal conventions of the sonata form in his days by combining unrelated keys. Although Schubert was not considered much of a composer in his days, his style later became common and highly celebrated. For this reason, it is said that </span><span>Franz Schubert was a brilliant composer ahead of his time.</span>
This is for music not arts u put the wrong subject