What is the maximum number of orbitals that can be identified with the following quantum numbers?

n = 3, $\mathrm{l} = 1$, ${\mathrm{m}}_{\mathrm{l}}=0$

An orbital is characterised by a single m value.
An orbital represented by only three quantum numbers. n= 3, l= 1, m= 0 will be z2 3d orbital.
To identify more than one orbital, more than one m_l value is required.
(2), (3), (4) requires 2, 3, 4 ‘ m_l ‘ values respectively