The initial call to _______________ will create and return an instance of the specified class. Subsequent calls to this method during the same execution cycle will return the same class instance as opposed to creating a new one.
A. Mage: :getResourceModel(‘namespace/modulename’);
B. Mage:: get Instance (‘name space/modulename’);
C. Mage: :getModel( ‘modulename/modelname’) ;
D. Mage::getSingleton(‘modulename/modelname’);
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