Dostoevsky considered the work artistic in a case when "a novelist expressing his thoughts in characters and images so that when the reader has finished the novel, he has fully understood the author's thoughts" (lines 35-41). In other words, artistry is the ability to write well and convey one's ideas to the reader through one's characters.
(B) accurately summarizes this view, " a novel where the author's ideas are given substance through suitable characters and events" would enable the reader to understand the author's ideas and is artistic per Dostoevsky.