Critical Reasoning (CR) | Re: Decentralization enables divisions of a large institution to

I feel A has mistaken negation error.

function autonomously(A) -> Encourages realistic planning and innovation(B)

but this does not mean that ~A -> ~B, there could be other ways to achieve realistic planning, decentralisation may be one of them. May be, there are some institutions that have achieved realistic planning, not necessarily through Decentralisation and autonomous functioning. Had the premise said, only decentralisation enables realistic planning, then Answer (A) would have