Two statements are followed by two conclusions numbered I and II. Assuming the statements to be true even if they do not conform to real-world knowledge, decide which of the conclusions logically follows/follow from the statements.

Statements:
1. Some streams are rivers.
2. No river is a lake.

Conclusions:
I. No stream is a lake.
Ii. Some rivers are streams.

A

Only conclusion I follows

B

Only conclusion II follows

C

Neither conclusion I nor conclusion II follows

D

Both conclusions I and II follow