Which of the following are everyday examples of abstraction? A. Sending your Mom a text B. Driving a car C. Turning on a light using an app on your phone D. Riding in an elevator (there can be multiple)

Two students are discussing electricity that has a frequency of 60 hz. student a says that this type of electricity is referred to as ac. student b says that in this type of electricity, the electrons flow in only one direction. which of the following statements is correct? a. only student a is correct b. only student b is correct c. both of the two students are correct d. neither of the two students is correct