Sentence 1: Since 1992 the unit is a full-time dedicated police tactical unit and is now known as the Special Emergency Response Team ( SERT ) .
Sentence 2: Since 1992 the unit has been a full-time police - tactical unit and is now known as the SERT ( Special Emergency Response Team ) .

Do these two sentences convey the same information?

Options are:
a). no;
b). yes;
b).