Question 18 An object X is coupled to an object Y if Complete Mark 0.00 out of 1.00 Select one: O a. X has an attribute of the same type as Y Flag question O b. Any of the options C. X invokes a method of Y O d. X has an array of objects of the same type as Y Question 19 Functional requirements may be specified with Complete Mark 1.00 out of 1.00 Select one: a. Any of the options b. Mathematical formulations Flag question O c. A natural language O d. UML Software engineering Question 20 Complete Mark 0.00 out of 1.00 Flag question Select one: a. Uses a process model b. Uses a development process because of its complexity c. All the options O d. Is based on computer science that provides computation theories