Match List I (Casting Defects) with List II (Explanation) and select the correct answer using the codes given below:
List I List II
A. Metallic projections 1. Consist of rounded or rough internal or exposed cavities including blow holes and pin holes
B. Cavities 2. Formed during melting, solidification and molding
C. Inclusions 3. Includes single folds, laps, scars adhering sand layers and oxide scale
D. Discontinuities 4. Include cracks, cold or hot tearing and cold shuts
5. Consists of fins, flash or massive projections and rough surfaces
A B C D
(a) 1 5 3 2
(b) 1 5 2 4
(c) 5 1 2 4
(d) 5 1 3 2