To Create a Set of Instructions to Make Otto Walk

Multiple Choice

To create a set of instructions to make Otto walk in a figure other than a square,the following instruction(s) would need to be added to the instruction set:

A) Turn 1 degree,turn is always right.
B) Turn x degrees,where x is a given number of degrees in an angle,turn is always right.
C) Turn x degrees,where x is a given number of degrees in an angle,turn is always left.
D) Any of the above.