When Cakes Are Nearing Doneness

When cakes are nearing doneness,

A) their surface appears black and they start to wrinkle at the pan edges.
B) they should be removed from the oven after a gap forms between the cake and the pan.
C) the top of the cake may be touched lightly with a finger; it should spring back.
D) insert a cake tester into the cake. If it comes out with some batter clinging to it, the cake is done.