If two Carnot engine CE1 and CE2 are connected in a series such that the heat rejected by CE1 is used as the input for the CE2 cycle with the intermediate temperature being the geometric mean of the extreme temperatures. Which of the following statement is TRUE for this efficiency of the Carnot engine?

A

$$ \eta_{CE1}>\eta_{CE2} $$

B

$$ \eta_{CE1}<\eta_{CE2} $$

C

$$ \eta_{CE1}=\eta_{CE2} $$

D

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