Which of the Following Statements Pertaining to Latin Square Design

Multiple Choice

Which of the following statements pertaining to Latin Square design is FALSE?

A) When the Latin Square design is used, the number of categories for each of the extraneous variables the researcher wishes to control must be greater than the number of treatments.
B) The Latin Square design is preferred to a randomized block design when there are two specific extraneous sources of error to be controlled.
C) Every treatment is used once with each category of each blocking variable in a Latin Square design.
D) The Latin Square design requires that the number of categories for each of the extraneous variables we wish to control be equal to the number of treatments.
E) All of the above are true.