The correct option is
D ↑↑↑↓↓Magnetic moment shown in Option A is for ferromagnetic material and Option B and D have equal no. of opposite magnetic moment, so they represent antiferromagnetic material.
Ferrimagnetism is observed when the magnetic moments of the domains in the substance are aligned in parallel and anti-parallel directions in unequal numbers.
Such an arrangement is observed in option C only. Hence, the correct option is C.