The most structured decisions are made at the $\_\_\_\_\_\_\_\_\_\_\_\_\_$level of an organization $($usually about individual transactions or activities$)$ while the most unstructured decisions are made at the $\_\_\_\_\_\_\_\_\_\_\_$ level $($usually affecting the company in the long term.$)$

Group of answer choices

Senior management; Operational management

Middle management; Operational management ;

Operational management; Middle management

Operational management; Senior management