Read the scenario below, then answer the question that follows.
Petra and Saul are starting an electric car share company in their city. To start, they will have 10 cars parked at specific locations around the city. The cars can be unlocked using a six-digit code that only subscribers will have access to. They are going to hire two additional employees to help them manage the day-to-day business. The initial advertising campaign will be aimed at 20- and 30-something professionals who don’t want to own a car but might need one on occasion.
How did Petra and Saul answer the economic question, "How much will be produced?”
4
6
10
20