A 56-year-old male has a blood pressure reading of 146/96mmHg. Upon hearing the reading, he exclaims, "My pressure has never been this high. Will I need to take medication to reduce it" Which of the following responses by the nurse would be best（）
A. "Yes. Hypertension is prevalent among males; it’s fortunate we caught this during your routine examination. "
B. "We’ll need to reevaluate your blood pressure because your age places you at high risk for hypertension. "
C. "A single elevated blood pressure doesn’t confirm hypertension. You’ll need to have your blood pressure reassessed several times before a diagnosis can be made. "
D. "You have no need to worry. Your pressure is probably elevated because you’re in the doctor’s office. "
远中邻面深龋，患者诉该牙曾有一段时间出现冷热刺激痛，检查发现，洞深穿髓，探(+)，叩痛(+)，Ⅰ度松动，X线片示该牙根尖无明显暗影，首选的治疗方法()