Which ONE of the following set of main elements are used in Business Process Modelling Notation $($BPMN$)?$

Question $2$Select one:

a$.$

Use Case, Actor, Data Flow and External Entities

b$.$

None of the answers is correct

c$.$

Storage, External Entities, Data Flow and Actor

d$.$

Use Case, Actor, Data Flow and Gateway

e$.$

Event, Task, Flow and Gateway