Which of the following steps are involved in the product improvement cycle?
1. Sell it in the market
2. Determine quality of performance
3. Design the product based on customer needs
4. Test it in the laboratory
Select the correct answer using the codes given below:
1
1 and 3 only
2
2 and 4 only
3
1, 3 and 4 only
4
1, 2, 3 and 4