Match the following
| List - I (Transgenic Plant) | List - II (Resistance) | ||
|---|---|---|---|
| A. | Papaya | I. | Phytophthora |
| B. | Bt cotton | II. | Ring spot virus |
| C. | Tomato | III. | Insect |
| D. | Potato | IV. | Pseudomonas |

Find the variance of the following frequency distribution:
| Class Interval | ||||
| 0--4 | 4--8 | 8--12 | 12--16 | |
| Frequency | 1 | 2 | 2 | 1 |