Correct option is A
Brittle material is a non – linear and non – elastic material. It is strong in compression and very weak in tension. It behaves non-linearly at all time because it has essentially zero strength in Tension. It is fail due to separation of particles which load is applied at 90 degree.
Ductile materials are approximately equal strong in tension and compression but weak in shear. It is failure occurs due to principle shear stress.