Call a positive real number special if it has a decimal representation that consists entirely of digits 0 and 7. For example, \frac{700}{99} \equal{} 7.\overline{07} \equal{} 7.070707\cdots and 77.007 are special numbers. What is the smallest n such that 1 can be written as a sum of n special numbers?
<spanclass=′latex−bold′>(A)</span>7<spanclass=′latex−bold′>(B)</span>8<spanclass=′latex−bold′>(C)</span>9<spanclass=′latex−bold′>(D)</span>10<spanclass=′latex−bold′>(E)</span>The number 1 cannot be represented as a sum of finitely many special numbers.