What is CU in the expression CU= D60/D10 where D60 and D10 are the sizes of particle such that 60% and 10% of the particles are finer than these sizes respectively?

What is CU in the expression CU= D60/D10 where D60 and D10 are the siz

1.	What is CU in the expression CU= D60/D10 where D60 and D10 are the sizes of particle such that 60% and 10% of the particles are finer than these sizes respectively?
A.	Coefficient of compaction
B.	Coefficient of consolidation
C.	Uniformity coefficient
D.	Effective size
Answer» D. Effective size