In the Complex Ion [ML₆]ⁿ⁺, Mⁿ⁺ Has Seven D Electrons

In the complex ion [ML₆]ⁿ⁺, Mⁿ⁺ has seven d electrons and L is a weak field ligand. According to crystal field theory, the magnetic properties of the complex ion correspond to how many unpaired electrons

A) 0
B) 1
C) 2
D) 3
E) 5