Please answer correct explain plz asap plz both are questions

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Sean Increase production from 3 to 4 fire engines. True or False: If Sean's Fire Engines were a competitive firm instead and $90,000 were the market price for an engine, Increasing it's production would not affect the price at which it can sell engines. OFalsoSean's Fire Engines is the sole seller of fire engines in the fictional country of Pyrotania. Initially, Sean produced three fire engines, but he has decided to increase production to four fire engines. The following graph shows the demand curve Sean faces. As you can see, to sell the additional engine, Sean must lower his price from $90,000 to $60,000 per fire engine. Note that although Sean gains revenue from the additional engine he sells, he also loses revenue from the initial three engines because he sells them all at the lower price. Use the purple rectangle (diamond symbols) to shade the area representing the revenue lost from the initial three engines by selling at $60,000 rather than $90.000. Then use the green rectangle (triangle symbols) to shade the area representing the revenue gained from selling an additional engine at $60,000, 180 135 Revenue Lost 120 Domand Revenue Gained PRICE (Thousands of dollars per fire engine) in QUANTITY (Fire engines)