Answer:
E) A and B only.
Explanation:
The problem with valuating intellectual property is not what the intellectual property is worth once it is completed (e.g. patent), the real challenge is to properly identify the costs of developing the intellectual property. Research and development costs are usually reported as expenses for this same reason.
Another problem is to really define what can be considered intellectual property and specially what intellectual property should be assigned value. A trademark is an intellectual property, but most trademarks are really worthless, but some like Apple or Coca Cola are worth millions.