Why was the battle of the coral sea a significant us victory

The Battle of the Coral Sea was important for several reasons. It was the first pure carrier-versus-carrier battle in history as neither surface fleet sighted the other. Though a draw, it was an important turning point in the war in the Pacific because, for the first time, the Allies had stopped the Japanese advance.

It was the first pure Carrier-vs-carrier in history as neither surface fleet sighted each other though a draw it was a turning point in the war in the pacific because for the first time the allies had stoped the Japanese advance  

A, c, and d are the answers