Survey study aims at: (i)  knowing facts about the two existing situation (ii)  comparing the present status with the standard norms (iii)  criticising the existing situation (iv)  identifying the means of improving the existing situation

• A. (i) and (ii) only
• B. (i), (ii), and (iii)
• C. (i), (ii), (iii) and (iv)
• D. (ii) and (iii) only