Five masses each of 2 Kg are placed on a horizontal circular disc, which can be rotated about a vertical axis passing through its centre and all the masses be equidistant from the axis and at a distance of 10 cm from it. The moment of inertia of the whole system (in gm-c`m^2`) is:
(Assume disc is of negligible mass)
| A. |
`10^5` |
| B. |
`10^4` |
| C. |
`10^6` |
 |
| D. |
`10^8` |