Given Only the Following Excerpt of an E-R Model

Multiple Choice

Given only the following excerpt of an E-R model:
Which of the following is known to be true?

A) A single instance of ENTITY A must be related to one instance of ENTITY B.
B) Many instances of ENTITY A may be related to one instance of ENTITY B.
C) ENTITY B has a degree of many.
D) ENTITY B is a weak entity.
E) Both A and C are true.