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 a

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