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Which of the following statement is correct?

[A].	The maximum size of coarse aggregate should not exceed one-fourth of the minimum dimension of the plain concrete member.	[B].	the maximum size of coarse aggregate should not exceed one-fifth of the minimum dimension of the reinforced concrete member
[C].	The aggregates of 40 mm, 20 mm and 10 mm sizes are commonly used for concrete works.	[D].	all of the above

Answer: Option D