What are the purposes of defining a prototype of IoT application?

(1) It helps to have understand how an IoT application works.

(2) It helps to discover the unknown tasks in the development of an IoT application.

(3) It helps to evaluate the performance of an IoT application.

Select one:

a. (1) and (2)

b. (1) and (3)

c. (2) and (3)

d. All of the above