Lucy had become immortal because after her death the people began to believe that she was still a living child who could be seen alone at the break of the day only those who had the deep concern with natural beauty. She was seen by singing a solitary song in the moor, walking rough and smooth and never looked behind.
When getting a secondary source one thing to remember is it can be created by an educated expert and published in an academic journal. Also, a firsthand account published in a magazine will also work as a secondary source. So bother A and B will be correct. If only one can be chosen, A would be the better of the two. <span />