Identify which statement is true about the relationship between the product and project life cycles.

a$.$ A product life cycle is basically the same as a project life cycle

b$.$ Each phase of the project life cycle may contain one or more product life cycles

c$.$ Each stage of the product life cycle may contain its own project life cycle

d$.$ The product and the project life cycles always run concurrently

e$.$ Products are developed independent from the project life cycle