Johann has 64 fair coins. He flips all the coins. Any coin that lands on tails is tossed again. Coins that land on tails on the second toss are tossed a third time. What is the expected number of coins that are now heads?
<spanclass=′latex−bold′>(A)</span>32<spanclass=′latex−bold′>(B)</span>40<spanclass=′latex−bold′>(C)</span>48<spanclass=′latex−bold′>(D)</span>56<spanclass=′latex−bold′>(E)</span>64