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Question

What is a lifeline?

a.

It is a frame consisting of a rectangle with a pentagon inits upper left-hand corner

b.

It is a rectangle containing an identifier with a dashed line extending below the rectangle

c.

It is a name compartment ; the interaction is represented inside the rectangle

d.

None of the mentioned

Posted under Software Architecture and Design

Answer: (b).It is a rectangle containing an identifier with a dashed line extending below the rectangle

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Q. What is a lifeline?
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