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Question :-

Which of the following actions will enable logging via calls to debugData() on a native Magento payment method model?
Set the protected property $_debug of the payment model to true
Set the config node default/payment/debug/ [method code] to 1
Call Mage::register ('payment_method_debug_' . [method code], true);
Set the config node default/payment/ [method code]/debug to 1
Call setDebug(true) on the payment method model

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