In India, which of the following Plans/approaches were adopted before the formal beginning of the Five-Year Plans? 1. Annual Plan 2. Rolling Plan 3. Bombay Plan 4. People’s Plan Select the correct answer using the codes below: (a) 1, 2 and 3 only (b) 1 and 4 only (c) 2 and 4 only (d) 1, 2 and 4 only