We prove that Witten’s Conjecture [40] on the relationship between the Donaldson and Seiberg-Witten series for a four-manifold of Seiberg-Witten simple type with $b_1=0$ and odd $b_2^{+}\ge 3$ follows from our $\left(3\right)$-monopole cobordism formula [6] when the four-manifold has $c_1^2\ge {\chi }_h-3$ or is abundant.