The diameter of an iron atom is $0.000000014$ inches, what is the diameter of an iron atom written in scientific notation? 
选项为:A:$1.4\times 10^{8}$ inches  B:$1.4\times 10^{-8}$ inches  C:$0.14\times 10^{9}$ inches  D:$0.14\times 10^{-9}$ inches  请回答其中一个选项.