system: You are an expert security code reviewer. You will be shown a source code file along with a multiple-choice question listing several function or class names from that file. Your task is to identify which one contains the specified CWE vulnerability.

OUTPUT FORMAT: Respond with the single letter of the correct option, wrapped in \boxed{...}. Example: `\boxed{B}`. Output the boxed letter ONLY -- no explanation, no other text.

user: ```python
import requests
import re
import json
import execjs
import time
import os
os.environ["EXECJS_RUNTIME"]="Node"
#先get网页，得到一个加密的js代码1，解密后得到另外一个js代码2，运行代码2，会得到一个 __jsl_clearance ，用 __jsl_clearance
#作为cookie再去get网页并且记录第二次get得到的cookie __jsluid， 会得到加密js代码3，解密后的得到js代码4，运行代码4，会得到最终的 __jsl_clearance
#将第二次记录下的__jsluid和通过运行js代码4得到的__jsl_clearance 作为cookie再次get网页，即可成功！！！！！
a=''
headers={
    'User-Agent' : 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.86 Safari/537.36',
 
}
head='''
    var window = {};
    window.document = {body:{innerHTML:"1"}, documentElement:{attributes:{webdriver:"1"}}, createElement:function(x){return {innerHTML:"1"}}};
    var document = window.document;  
'''
window='''
 var window={}
'''
def get_js():
    f = open(r'C:\Users\cy\Desktop\seebug.js', 'r', encoding='utf-8')
 
    line = f.readline()
    htmlstr = ''
    while line:
        htmlstr = htmlstr + line
        line = f.readline()
    return htmlstr
def get_one(text):
    while True:
        try :
            #print(text)
            text = re.findall('<script>(.*?)</script>', text)[0].replace('eval(', 'return(')
            #print(text)
            # with open('C:\Users\cy\Desktop\seebug.js','w') as f:
            #     f.write(str(text[0]))
            jsstr = "function y(){" + text + "};"
            ctx = execjs.compile(jsstr)
            __jsl_clearance = ctx.call('y')
            #print(__jsl_clearance)
            a = re.findall('var(.*?)=function', __jsl_clearance)[0]
            __jsl_clearance = __jsl_clearance.replace('document.cookie=', 'return ')
            __jsl_clearance = head + 'var' + a + '=function(){return' + re.findall('return(.*)};', __jsl_clearance)[ 0] + '};'
            #print(__jsl_clearance,a)
            ctx = execjs.compile(__jsl_clearance)
            __jsl_clearance = ctx.call(a)
            #print(__jsl_clearance)
            __jsl_clearance = re.findall('__jsl_clearance=(.*?);', __jsl_clearance)[0]
            #print(__jsl_clearance)
            return __jsl_clearance
        except Exception as e:
          exit()
def set_cookies(s,text,url):
    __jsl_clearance = get_one(text)
    #print(__jsl_clearance)
    # exit()
    # print(str(__jsl_clearance)[0:28])
    new_headers={
        'Cookie':'__jsl_clearance=%s'%__jsl_clearance,
        #     'Cookie':'__jsluid=8817f1e029e5c8cd7220c03c730f348c;__jsl_clearance=1554896988.334|0|Z1mbpX5roEaRhMQz21QMXoD4084%3D',
        'User-Agent' : 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.86 Safari/537.36',
    }
    r = s.get(url=url,headers=new_headers)
    text=r.text
    cookie = r.cookies['__jsluid_s']
    #print(cookie)
    __jsl_clearance=get_one(text)
    #print(__jsl_clearance)
    new_headers2={
        'Cookie':'__jsluid_s=%s'%cookie+';'+'__jsl_clearance=%s' % __jsl_clearance,
        'Content-Type': 'application/json;charset=UTF-8',
        'X - Requested - With' : 'XMLHttpRequest',
        'Accept - Encoding' : 'gzip, deflate',
        'Accept - Language' : 'zh - CN, zh;q = 0.9',
 
    #     'Cookie':'__jsluid=8817f1e029e5c8cd7220c03c730f348c;__jsl_clearance=1554896988.334|0|Z1mbpX5roEaRhMQz21QMXoD4084%3D',
        'User-Agent' : 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.86 Safari/537.36',
    }
    #r = s.get(url=url, headers=new_headers2)
    return new_headers2
    
def seebug_headers(url):
    s=requests.session()
    text=s.get(url=url,headers=headers).text
    if re.search(r'SSV-(\d)+',text): # 普通模式
        return headers
    else: # 反反爬虫模式
        seebug_headers=set_cookies(s,text,url=url)
        return seebug_headers

if __name__ == '__main__':
    print(seebug_headers('https://www.seebug.org/vuldb/vulnerabilities'))

```

Which of the following functions or classes contains a `CWE-116: Improper Encoding or Escaping of Output` vulnerability?

  A) set_cookies
  B) get_js
  C) seebug_headers
  D) get_one
Answer: D