Match the following :
| a) Internal economies | 1. for industries |
| b) External economies | 2. over production |
| c) Large scale production | 3. least cost firm |
| d) Optimum firm | 4. for single firm |
Match the period of Five Year Plan
| Five Year Plan | Period |
| a) Third Five Year Plan | 1. 2002-07 |
| b) Seventh Five Year Plan | 2. 2012-17 |
| c) Nineth Five Year Plan | 3. 1961-66 |
| d) Twelfth Five Year Plan | 4. 1985-90 |