In the Figure Below, the Labels for the Genetic Logic

In the figure below, the labels for the genetic logic gates are missing. Which answer choice locates them correctly?

A) i) Buffer, ii) NOT, iii) OR
B) i) NOT, ii) Buffer, iii) OR
C) i) Buffer, ii) OR, iii) NOT
D) i) OR, ii) Buffer, iii) NOT
E) i) NOT, ii) OR, iii) Buffer