How does oxaloacetate function in both gluconeogenesis and the citric acid cycle?

Oxaloacetate is a key intermediate in both pathways, linking gluconeogenesis to the citric acid cycle.

Oxaloacetate is only involved in gluconeogenesis and not in the citric acid cycle.

Oxaloacetate is converted directly to glucose in the citric acid cycle.

Oxaloacetate is a waste product in both pathways.