Identify which of the following statements are true?1. The context diagram should depict the system as a single bubble2. Control Information should not be represented in a DFD3. A data store can be connected either to another data store or to an external entity.4. External entities should be identified clearly at all levels of DFD's

Identify which of the following statements are true?1. The context dia

1.	Identify which of the following statements are true?1. The context diagram should depict the system as a single bubble2. Control Information should not be represented in a DFD3. A data store can be connected either to another data store or to an external entity.4. External entities should be identified clearly at all levels of DFD's
A.	1 and 2
B.	2 and 3
C.	3 and 4
D.	1,2 and 4
Answer» B. 2 and 3