Which of the following is$/$are true about portfolio planning for multibusiness corporations?

Group of answer choices

It is sometimes sensible for a multibusiness corporation to allocate few resources to an SBU $($strategic business unit$)$ that is a $$question mark.$$

The decision to allocate resources to a given SBU may depend on decisions about allocating resources to other SBUs and on the decision$-$maker$$s tolerance for risk.

A $$question mark$$ may eventually become a $$star$$ and a $$star$$ may eventually become a $$cash cow.$$

a and b

all of the above