Sentence 1: In 2008 the warrant officer ranks of the South African National Defence Force were created and the rank of master warrant officer was expanded .
Sentence 2: In 2008 , the Warrant Officer ranks of the South African National Defence Force were created and the rank of a Master Warrant Officer was expanded .

Do these two sentences convey the same information?

Options:
[a]. no;
[b]. yes;
[b].