Compare fibers as reinforcing material in pmc materials

Question

The table below gives physical properties for three types of fibers used to reinforce polymer resins to make PMC materials.

FIBER TYPE>>	CARBON	ARAMID	E-GLASS
Modulus of Elasticity- MSI	33	18	10.5
Tensile Strength- KSI	580	400	500
Specific Modulus of Elasticity- MSI	18.3	12.5	4.1
Specific Tensile Strength- KSI	322	278	197
Specific Gravity- g/cc	1.8	1.44	2.54
Relative Cost	High	Moderate	Low

MSI = million lb/in²

KSI = thousand lb/in²

Compare these fibers as the reinforcing material in PMC materials. In what types of applications might you chose each of them, keeping in mind stiffness, strength, density and cost factors? A thorough discussion is expected.