Consider the following claimed constraints on algae based biofuel production in developing countries:

1. Algae can only be cultivated in open seas, a resource most developing countries lack access to.

2. The technology and expertise required are only needed until the production facility is constructed, after which no further support is needed.

3. Economically viable, large scale production requires facilities whose scale raises significant ecological and social concerns.

Which one of the statements given above correctly explains the main constraint developing countries actually face?