Choose the ending that best fits the mysterious and slightly eerie tone of the following unfinished story: 'Elara had always been drawn to the abandoned mansion at the edge of town. Locals whispered tales of its former owner, a reclusive astronomer who vanished without a trace decades ago, leaving behind all his strange instruments and star charts. One moonless night, driven by an irresistible curiosity, Elara snuck inside. Dust motes danced in the beam of her flashlight as she explored the grand, decaying rooms. In the observatory, a massive telescope pointed skyward, covered in cobwebs. As she touched its cold brass, a faint hum filled the air, and the telescope slowly, silently, began to turn, aligning itself with a constellation Elara had never seen before. A single, ancient star chart lay open on a nearby table, its ink glowing faintly in the dim light. On it, a cryptic message was written in a language she didn't understand, but one symbol, resembling a stylized eye, seemed to pulse with a soft, internal light. Suddenly, the hum intensified, and the room grew cold, as if something vast and unseen had just entered.'
A) Elara quickly ran out of the mansion, deciding that some mysteries are best left unsolved.