Which statement represents the advantage of prescribing Ondansetron rather than Promethazine for a client with nausea?

Ondansetron can be given earlier and remain effective

Ondansetron has minimal adverse effects and Promethazine affects the CNS.

Ondansetron is an anti-emetic drug and Promethazine doesn't stop nausea

Ondansetron is a newer medication and more available