ceftazidime is.. 3st generation cephalosporins against gram –ve &gram +ve bacteria

ceftazidime is:
a- 1st generation cephalosporins against gram –ve &gram +ve bacteria
b- 2st generation cephalosporins against gram –ve &gram +ve bacteria
c-  3st generation cephalosporins against gram –ve &gram +ve bacteria***
d- broad spectrum penicillin.