Minimum Maintenance Requirement

This question has been bugging me lately:

If I buy 100 shares of XYZ security on margin for $62 and then sell 1 call option on XYZ for 3, I know that the margin requirement is 3100 and that the deposit is 2800 (3100 less the 300). However, I was asked how far the price if XYZ can go before I receive a maintenance call. I realize that the minimum maintenance is 25% and that one can derive the debit value divided by 75% can give the minimum amount of market value for before getting maintenance call. However, I the possible answers I was provided did not make sense.

Does anyone how to tackle this one? What is the lowest possible price before getting a maintenance call?

Thanks.

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