The advantages of a packaged boiler are:
1. lower freight costs because of less handling
2. lower initial cost because they are mass produced
3. quality control is easier to implement
4. the boilers can be factory tested before being sent to the customer
5. it requires little time to put the unit into operation at the plant site
a) 1, 3
b) 2, 5
c) 2, 3, 4
d) 1, 2, 3, 4, 5
e) 2, 3, 4, 5
Answer: D