Cramer's lightning round: Trinseo is not a buy

• It's that time again! "Mad Money" host Jim Cramer rings the lightning round bell, which means he's giving his answers to callers' stock questions at rapid speed.

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First Solar Inc: "I like the idea, but I also feel like I'm coming in too high if I tell you to buy it right here."

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Lithium Americas Corp: "We're not going to recommend stocks that have been perpetual money losers."

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Trinseo PLC: "I'm going to have to say no to that one."

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Royalty Pharma PLC: "It's working. Hold on to it. It's going higher."

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