The metal ions that have the calculated spin only magnetic moment value of 4.9 B.M. are
A. $$Cr^{2+}$$
B. $$Fe^{2+}$$
C. $$Fe^{3+}$$
D. $$Co^{2+}$$
E. $$Mn^{3+}$$

Choose the correct answer from the options given below

A

A, C and E only

B

A, D and E only

C

B and E only

D

A, B and E only