Fixed in Sensitivity Analysis:

correct answer is A

D. Changing the projected growth rate and COGS.

Option B is the right answer. Because dividend payout ratio is not involved in any revenue generation or expense incurred to generate revenues. This is simply relates to distribution of profit.

Changing the projected growth rate  is the correct answer

So. Right answer  B.

A

"B"

reason

all other are relates to revenue generating activities and could be possible the variation  can  cause to change in the revenue

but the Divivdend payaout is not relevant to revenue generating activity butrelate to profit distribution activity