Which Statement Accurately Describes the Goal of Portfolio Planning

Which statement accurately describes the goal of portfolio planning?

A) To help managers decide on corporate-level strategy in multi-business or multi-product situations
B) To help managers identify a firm's market share relative to its competitors
C) To help managers maximise stock market awareness of their business
D) To help managers strategically invest scarce organisational resources among competing business opportunities
E) To help managers determine the best way to beat the competition