Some People Experience Hallucinations Before or During Migraines or Epileptic

Some people experience hallucinations before or during migraines or epileptic seizures. What are these hallucinations called? Which sensory system(s) do they involve?

A) These hallucinations are called auras and usually involve vision.
B) These hallucinations are called auras and may involve any sensory system.
C) These hallucinations are called ageusias and usually involve taste or smell.
D) These hallucinations are called ageusias and may involve any sensory system.