What Was the Result of Israeli Efforts to Destroy Hamas

What was the result of Israeli efforts to destroy Hamas in Operation Cast Lead?

A) Israel crushed Hamas and since the organization has limped on but will probably end soon.
B) Israel regarded it as a success but was criticized for the number of civilian deaths.
C) Israel was quickly pushed back and lost a lot of people in the fighting so they will probably not try again.
D) Israel acquired nuclear technology and Hamas backed down.