Of these statements
A. 1 and 2 are correct.
B. 1, 2, 3 and 4 are correct.
C. 1 alone is correct.
D. 2, 3 and 4 are correct.
Answer:A
Of these statements
A. 1 and 2 are correct. B. 1, 2, 3 and 4 are correct. C. 1 alone is correct. D. 2, 3 and 4 are correct.