Positive symptoms in Schizophrenia is because of
a) ↑ dopaminergic activity in mesolimbic pathway → positive symptoms
b) ↓ dopaminergic activity in mescortical pathway → Negative symtoms
c) ↓ dopaminergic activity in nigrostriatal parthway → Paskinsonism
d) Tuberoinfundibular pathway regulates prolactin secretion.