Identify the given A, B, C, D and E.
| | A | B | C | D | E |
| (a) | Marginal | Axile | Free central | Parietal | Basal |
| (b) | Marginal | Parietal | Free central | Axile | Basal |
| (c) | Marginal | Axile | Parietal | Free central | Basal |
| (d) | Marginal | Axile | Parietal | Basal | Free central |