Cramer's lightning round: Go long on Hertz

• 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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Olin Corp: "The pricing is not going to hold up. I want you to be careful with that one."

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Hertz Global Holdings Inc: "Let it run. ... Be long, Hertz."

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CF Industries Holdings Inc: "Fertilizer plays tend to be very volatile. Take out half [your CF Industries shares], play with the rest."

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Crocs Inc: "I'm going to say, avoid."

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Canopy Growth Corp: "It's too low to sell at $7."

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JD.Com Inc: "My take is this: I don't want you there, okay? Too risky."

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