Which of the following is a common sign of tardive dyskinesia?

Choice A reason: Parkinson-like symptoms such as tremors and rigidity are associated with pseudoparkinsonism, not tardive dyskinesia. Choice B reason: Muscle pain and spasms are more consistent with acute dystonia, not tardive dyskinesia. Choice C reason: Tardive dyskinesia is characterized by permanent, involuntary movements, often of the face, tongue, and extremities. These movements are a late and often irreversible side effect of long-term antipsychotic use. Choice D reason: Severe restlessness is akathisia, a different extrapyramidal side effect.