A – Wrong
This cannot be deduced from the paragraph. It states that Microsoft does not want anyone repeating on the internet what it achieved but this does not mean that Google is achieving what Microsoft already has.
B – True
The sentence “the three, who recently looked down on Google” suggests that the three used to look down on Google but not anymore.
C – Wrong
It is not certain that an alliance will be able to stop Google. The line “the three…wonder if they can forge alliances to combat it.” suggests that they are considering an alliance but they are not certain.
D – Wrong
This cannot be inferred from the passage.