Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusion(s) logically follow(s) from the statements.
Statements:
1. Some pigeons are crows.
2. All rodents are crows.
3. Some ants are rodents.
Conclusions:
I. Some pigeons are ants.
II. Some rodents are pigeons.

​Statements:
1. Some pigeons are crows.
2. All rodents are crows.
3. Some ants are rodents.

​Conclusions:
I. Some pigeons are ants. (False, there is no direct relation between pigeons and ants).
II. Some rodents are pigeons. (False, there is no direct relation between rodents and pigeons).
So, neither conclusion I nor II follows.

Thus, correct option is (d).