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Question :-

Which of the following options would cause a poll/poll collection to load all entities that have been posted during April, 2011?
$collection->addAttributeToFilter('date_posted', array('from' => '2011-04-01', 'to' => '2011-04-30') );\
$collection->addFieldToFilter('date_posted', array('from' => '2011-04-01', 'to' => '2011-04-30') );
$collection->addPostDateFilter('2011-04-01', '2011-04-30');
$collection->addFieldToSelect(('date_posted', arrayCfrom' => '2011-04-01', 'to' => '2011-04-30') );

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