In the Parable of the Talents (Matthew 25:14-30), what was the primary reason given for the master's condemnation of the servant who received one talent?

A He invested the talent in a risky venture that failed. B He hoarded the talent out of fear, failing to make any profit. C He used the talent for personal gain instead of his master's business. D He gave the talent away to the poor, neglecting his responsibilities.