which statement is true about class tracking in quickbooks online?

$1-$When you assign one class to an entire transaction, it affects the source

$2-$The customezed balance sheet by class reprort should always balance by class

$3-$a sub$-$class have several parent classes

$4-$each class is limited to $5$ hierarchical levels including the parent class

$5-$you can assign a default class to a venter record