Unable to get the bandwith of a matrix

I am trying to get the bandwidth of a matrix using BandedMatrices.jl in the following manner.

using BandedMatrices

A =  [
    2.0 5.0 5.0 0.0 0.0 0.0
    2.0 5.0 5.0 0.0 0.0 0.0
    2.0 5.0 5.0 0.0 0.0 0.0
    0.0 0.0 0.0 8.0 0.0 0.0
    0.0 0.0 0.0 0.0 8.0 0.0
    0.0 0.0 0.0 0.0 0.0 8.0]

println(bandwidths(A))

It is giving (5,5) while the expected answer is (3,3).

Please let me know the right procedure for getting the bandwidth of a matrix.

Thanks in advance.

Try

A=BandedMatrix([
    ...
    ])