A same meaning or not problem:
If the n vectors are linearly independent , equality is achieved in the inequality of Hadamard if and only if the vectors are orthogonal .
If the n vectors are linearly orthogonal , equality in Hadamard 's inequality is achieved if and only if the vectors are independent .
****
[A]: no

A same meaning or not problem:
They showed how to use secure cryptography to implement a public key information extortion attack .
They showed how to use secure cryptography to implement a blackmail attack using public key information .
****
[A]: yes

A same meaning or not problem:
In the meantime , Nick is confronted with his former crew : Mikka , Vector , Sib and Pup .
In the meantime , Mikka was confronted by his former crew : Nick , Vector , Sib , and Pup .
****
[A]: no

A same meaning or not problem:
Kenya 's Trade Minister , Monica Mland , led a delegation of 54 companies to Norway in September 2015 .
Monica Mland , Minister of Trade in Kenya , led a delegation of 54 companies to Norway in September 2015 .
****
[A]:
yes