Match the Marketing Management philosophies given in Column I with their main focus given in Column II:
| Column I | Column II |
| 1. Production concept | (i) Customers’ needs |
| 2. Product concept | (ii) Quality, performance and features of product |
| 3. Marketing concept | (iii) Customers’ needs and societal well-being |
| 4. Societal marketing concept | (iv) Quantity of product |
Choose the correct option from the following:


A ladder of fixed length \( h \) is to be placed along the wall such that it is free to move along the height of the wall.
Based upon the above information, answer the following questions:
(iii) (b) If the foot of the ladder, whose length is 5 m, is being pulled towards the wall such that the rate of decrease of distance \( y \) is \( 2 \, \text{m/s} \), then at what rate is the height on the wall \( x \) increasing when the foot of the ladder is 3 m away from the wall?