Read the scenario, then answer the question.

Dean and Carlos have developed a digital sound recording app that allows users to record their own music with up to four soundtracks through USB cable attachments and smartphone microphones. It makes music recording more accessible and portable. They are marketing the app to musicians of all abilities and hope to be able to sell the app to a large corporation for a profit.

How did Dean and Carlos answer the question "What to produce?”

They made the app compatible with USB adaptors.
They resolved to sell the app for a profit.
They developed a digital sound recording app.
They marketed the app to musicians.

help plz