Which of the Following Defines the Sampling Frame

Which of the following defines the sampling frame?

A) It is a fraction of the defined population.
B) It is the principle that all elements in a researcher's target population have an equal chance of being selected for inclusion in the study.
C) It is the extent to which a sample represents its population on a particular parameter.
D) It is a nonprobability sample type for which a researcher gathers data from the elements that happen to be convenient.
E) It is the list of all elements in a population.