How to interpolate (rephrased from previous question) ?

Lets say I have Matric A (3x4) and B (5x3)

A = 1  3  6  8
    4  6  7  9
    5  8  8  12

B = 1  4  6  
    2  5  5
    3  4  6
    6  8  9
    5  7  4

and matrix C (9x1 matrix). which is a unique(a(:));

C=unique(A(:));

and C became:

C = 1
    3
    4
    5
    6
    7
    8
    9
    10

The purpose of A and B is such that. The all ROWS of B will be plotted as y-axis against column 1 of A as x-axis, then all ROWS of B against column 2 of A, then all ROWS of B against column 3 of A so on and till column 4 of A.

I want to interpolate B to have 10 points so that I can plot it against C.

D = interp1(A,B,C)

but was reflected

??? Error using ==> interp1 at 123
X must be a vector.

Not sure if is possible to interpolate like this. or is there any other way i can do this.

My intention is

 D1 = interp1(""first column of A"",B,C)
 D2 = interp1(""2nd column of A"",B,C)
 D3 = interp1(""3rd column of A"",B,C)

So that all Ds are 5x10 matrix

May I know the proper command to go about this.

[Harry]

Why did you delete my previous comments? If you respond to my previous comments, then I will give you the code.

[hithere]

i actually deleted the whole question and i cant delete comments anyway. cause i read through it and didnt make sense to me too. so i rephrased and posted this.