Florida documentary stamp tax on notes is:

Option B incorrectly states $0.70 per $100, which is actually the rate for Florida documentary stamp tax on deeds, not on promissory notes. This rate confusion is a common mistake when students mix up tax rates for different real estate documents.

Option C is incorrect because it references 'the amount secured,' which is not the basis for calculating stamp tax on promissory notes in Florida. The tax is calculated based on the face amount of the note itself, not the value of the property securing it.

Option D is incorrect because Florida does require documentary stamp tax on promissory notes. This misconception may arise from confusing Florida with states that don't impose this tax, or misunderstanding which documents are subject to taxation.