Two statements are given followed by two conclusions I and II. You have to consider these statements to be true, even if they seem at variance from commonly known facts. Decide which of the given conclusions logically follow/s from the given statement.

Statements:

1. All petunias are flowers.

2. No flower is black.

Conclusions:

I. Some petunias are black.

II. No petunia is black.

Only conclusion II follows.

From statement 1, we know that all petunias are flowers.

From statement 2, we know that no flower is black.

Now, let's evaluate the conclusions;

I. Some petunias are black.

This conclusion contradicts statement 2, which says that no flower is black. Therefore, conclusion I does not logically follow.

II. No petunia is black.

This conclusion is consistent with statement 2 (no flower is black) and also with statement 1 (all petunias are flowers). Therefore, conclusion II logically follows.

Thus, the correct answer is Only conclusion II follows.