'Lang factor' is defined as the ratio of the capital investment to the delivered cost of major equipments. The value of 'Lang factor' for fixed capital investment, for a solid-fluid processing chemical plant ranges from
A
1.2 to 1.4
B
2.5 to 2.7
C
4.2 to 4.4
D
6.2 to 6.4
Correct Answer: 4.2 to 4.4