执行以下代码，数据表中共有几条数据？（）imp

执行以下代码，数据表中共有几条数据？（）

import sqlite3conn=sqlite3.connect('student_info.db')cursor=conn.cursor()cursor.execute('''CREATE TABLE IF NOT EXISTS Student(id INTEGER PRIMARY KEY,name TEXT,age INTEGER)''')cursor.execute("INSERT INTO Student(id,name,age)VALUES(1,'Alice',20)")cursor.execute("INSERT INTO Student(id,name,age)VALUES(2,'Bob',22)")cursor.execute("INSERT INTO Student(id,name,age)VALUES(3,'Charlie',21)")cursor.execute("SELECT*FROM Student")students=cursor.fetchall()for student in students:    print(f"ID:{student[0]},Name:{student[1]},Age:{student[2]}")cursor.execute("UPDATE Student SET age=23 WHERE id=2")cursor.execute("DELETE FROM Student WHERE id=3")conn.commit()conn.close()