Less common. For severe cases, gastrectomy is still an option. But with the advent of acid suppression therapy like proton pump inhibitors, as well endoscopic techniques, such surgeries are not needed as often.
Unclear. Your question is not clear. Please clarify.
Not commonly done. Antrectomy removes the portion of the stomach that makes acid. While there may be indications for antrectomy, such as perforation, bleeding or scarring leading to obstruction, the reality is that gastric ulcers are successfully treated by medications, including proton pump inhibitors and h2-blockers. If the ulcers are associated with h. Pylori, then eradication of this with antibiotics is needed.