Which of the following are examples of a Grey Hole in a Data Flow Diagram? i. A customer inputs his login details and is immediately logged into his account ii. A client keeps inputting his data and...

Extracted text: Which of the following are examples of a Grey Hole in a Data Flow Diagram? i. A customer inputs his login details and is immediately logged into his account ii. A client keeps inputting his data and receives a blank page iii. A manager requests for inventory report and receives employee data iv. A manager logs in and is logged in as a client in the system. * a. i, iii and iv b. i and iii c. ii and iv d. ii, iii and iv