The Findings of the Stenting and Angioplasty with Protection in Patients

The findings of the Stenting and Angioplasty with Protection in Patients at High risk for Endarterectomy (SAPPHIRE) trial concluded which of the following about carotid artery stenting compared to endarterectomy on the risk for death,stroke,or MI 30 days and 1 year post procedure?

A) The carotid artery stenting was not inferior to endarterectomy.
B) The carotid artery stenting led to greater risk than endarterectomy.
C) Both the carotid artery stenting and endarterectomy were equivalent.
D) Both the carotid artery stenting and endarterectomy led to low risk.