Answer:
$70,000
Step-by-step explanation:
Research and development: It is a process which involves innovation, improvement in the existing business process or the introduction of the new product so that the companies can earn maximum and achieve their sales targets and attain the market share also.
The total cost of the research and development of the value chain is $70,000 which contains the salaries of research scientists.
The other items which are mentioned in the question are irrelevant because they are related to the production and distribution cost.