Yes to all with custom programming. You would use the frm_after_create_entry hook to loop through the selected options and use Formidable's form creating function.

For completeness and to help anyone else who followed the thread, here is the code that provided the basis for a solution: 

add_action('frm_after_create_entry', 'create_multiple_entries_after_submission', 30, 2);

function create_multiple_entries_after_submission($entry_id, $form_id){
    if ( $form_id != 72 ) {//Change 72 to the ID of Form A
        return;
    }

    $form2 = '73';//Change 73 to the ID of Form B
	
	//Read Form A "options" field into an array.
	$array = $_POST['item_meta'][1161]; //Change 1161 to the ID of the "Options" field in Form A.
	foreach($array as $value) //loop over values
	{
		//Create entry
		FrmEntry::create(array(
		'form_id' => $form2,
		'frm_user_id' => $user,
		'item_meta' => array(
			// list all fields to be copied to multiple entries
			1162 => $value, //Copies the particular option to the new entry.  Can be used for a title or similar.
			// Change 1162 t othe ID of the field in Form B you want to store the option.
			// N.B. $value MUST be used within the loop or entries are not saved.
			1157 => $_POST['item_meta'][1156],
			// Change 1156 to the ID of the source field in Form A. 
			// Change 1157 to the ID of a field in Form B you want to populate with the value from Form A.
			// Repeat for all other required fields
			),
		));
	}       
}