In the Parable of the Talents (Matthew 25:14-30), what is the primary reason the master condemns the servant who received one talent?

A He invested the talent in a risky venture and lost it all. B He hoarded the talent out of fear and did not attempt to increase it. C He used the talent for his own personal gain instead of his master's. D He gave the talent away to the poor, believing it was the most righteous thing to do.