Which of the following is a correct match for disease and its symptoms?
(A)Muscular dystrophy - An auto immune disorder causing progressive degeneration of skeletal muscle

(B)Arthritis - Inflammed joints
(C)Tetany - high `` Ca ^{2+} `` level causing rapid spasms.
(D)Myasthenia gravis - Genetic disorder resulting in weakening and paralysis of skeletal muscle