Why Are Atypical Antipsychotics Less Likely to Cause Extrapyramidal Side

Why are atypical antipsychotics less likely to cause extrapyramidal side effects than conventional antipsychotics?

A) because only conventional antipsychotics bind to dopamine receptors
B) because only atypical antipsychotics target positive symptoms
C) because only conventional antipsychotics have an affinity for both dopamine and serotonin receptors
D) because atypical antipsychotics bind more weakly to dopamine receptors