Which of the following system do not give correct descrptin of axial length and axial angles?

Options

A. Hexagonal: `a=b ne c`, `alpha=beta=90^@, gamma=120^@`
B. Tetragonal: `a=b ne c`, `alpha=beta=90^@, gamma ne 90^@`
C. Monoclinic: `anebnec, alpha=beta=gamma ne 90^@`
D. Cubic: a=b=c, `alpha=beta=gamma=90^@`