Which option shows correctly matched pairs for the column I and Column II ?
| Column-I | Column-II |
| (P) Unipolar neron | (i) Retina |
| (Q) Bipolar neuron | (ii) Cerebral hemisphere |
| (R) Multipolar neuron | (iii) Embroyonic stage |
(a) (P-iii), (Q-i), (R-ii)
(b) (P-ii), (Q-i), (R-iii)
(c) (P-iii), (Q-ii), (R-i)
(d) (P-ii), (Q-iii), (R-ii)
