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The leakage reactances are less than their values at the full load operating conditions. Why?

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The leakage reactances are less than their values at the full load operating conditions. Why?

(a) Due to large inrush current during starting

(b) Due to very low saturation

(c) Due to speed is not same as synchronous speed

(d) All of the mentioned

This question was posed to me in final exam.

My question comes from Equivalent Circuit topic in chapter Induction Machines of Electrical Machines

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The correct choice is (a) Due to large inrush current during starting

The best I can explain: During the start, there will be large inrush currents flowing in the machine, which cause saturation and so the leakage reactance decreases at start.

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