Why was the Thomson’s Model of an atom failed?

Q. Why was the Thomson’s Model of an atom failed?

i. It could not explain the screening of negative charges from that of positive

ii. It did not tell about the presence of electrons

iii. It did not give an idea about the discrete energy levels

iv. It explained the atom as a whole to be electrically neutral

Choose the correct option from the following:

A.            Only (iii)

B.            Both (i) & (iii)

C.            Only (i)

D.            Both (ii) & (iv)

Answer: Both (i) & (iii)