I cannot bear with that niggard fellow any more.

Answer: Option B

Niggard : a mean or ungenerous person; a miser.
Miserly : of or characteristic of a miser.
Generous : showing a readiness to give more of something, especially money, than is strictly necessary or expected.
Extravagant : lacking restraint in spending money or using resources.
Avaricious : having or showing an extreme greed for wealth or material gain.

Antonym of Niggard is Generous