Question: Extract vectors from a vector

Dear Users!

I hope everyone is fine here. I have three vectors say V[1], V[2] and V[3] as:

restart; with(LinearAlgebra); with(linalg);
V[1] := Vector([3, 2, -4]);
V[2] := Vector([1, 2/3, 7]);
V[3] := Vector([-9, 0, 1/2]);

I can define a Vector V have V[1], V[2] and V[3] using blockmatrix command as:

C := blockmatrix(3, 1, [V[1], V[2], V[3]]);

My question is that how I can extract vectors V[1], V[2] and V[3] from C? Thanks in advance

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