A fleet manager notices that three sedans from the same model year all developed transmission failures within 5,000 miles of each other. What is the BEST initial investigative step?
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A
Replace all three transmissions immediately
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B
Check for a manufacturer technical service bulletin (TSB) related to the transmission
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C
Sell the vehicles and replace them with a different brand
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D
Increase the transmission fluid change interval for the rest of the fleet