In H.C.P. arrangement in three dimensions, the overall coordination number of each sphere is
4
6
9
12
In the plane of sphere 6, above the plane 3, below the plane 3.
Match the types of packing given in Column I with the items given in Column II.
Column IColumn IIA.Square close packing in two1.Triangular voidsdimensionsB.Hexagonal close packing in two2.Pattern of spheres is repeateddimensionsin every fourth layerC.Hexagonal close packing in3.Coordination number=4three dimensionsD.Cubic close packing in three4.Pattern of sphere is repeated indimensionsalternate layers