When Waves Crash Against a Sea Cliff,what Is the Main

Multiple Choice

When waves crash against a sea cliff,what is the main process that erodes the cliff?

A) abrasion by rocks flung against the cliff by the waves
B) water flowing upward against the cliff,washing the cliff face of loose debris
C) hydraulic pressure driven by the waves forcing water,air,or both into cracks,dislodging rocks from the cliff
D) impact of the wave causing vibrations that trigger landslides