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
'''Arsenal API bulk tags.'''
#  Copyright 2015 CityGrid Media, LLC
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.
#
import logging
from datetime import datetime
from pyramid.view import view_config
from sqlalchemy.orm.exc import NoResultFound
from sqlalchemy.orm.exc import MultipleResultsFound
from arsenalweb.models.common import (
    DBSession,
    )
from arsenalweb.models.nodes import (
    NodeAudit,
    )
from arsenalweb.views import (
    get_authenticated_user,
    )
from arsenalweb.views.api.common import (
    api_200,
    api_400,
    api_404,
    api_500,
    )
from arsenalweb.views.api.nodes import (
    find_node_by_id,
    )

LOG = logging.getLogger(__name__)

def remove_tags(node_ids, auth_user):
    '''Remove all tags from a list of node_ids.'''

    resp = {'nodes': []}
    try:
        for node_id in node_ids:

            node = find_node_by_id(node_id)
            LOG.debug('Removing all tags from node: {0} '
                      'tags: {1}'.format(node.name,
                                         [ng.name for ng in node.tags]))
            resp['nodes'].append(node.name)
            utcnow = datetime.utcnow()

            LOG.debug('tag objects: {0}'.format(node.tags))
            for tag in list(node.tags):
                LOG.debug('Removing tag: {0}={1}'.format(tag.name, tag.value))
                try:
                    audit = NodeAudit(object_id=node.id,
                                      field='tag',
                                      old_value='{0}={1}'.format(tag.name, tag.value),
                                      new_value='deleted',
                                      updated_by=auth_user['user_id'],
                                      created=utcnow)
                    DBSession.add(audit)
                    LOG.debug('Trying to remove tag: {0}={1} from '
                              'node: {2}'.format(tag.name, tag.value, node.name))
                    node.tags.remove(tag)
                    LOG.debug('Successfully removed tag: {0}={1} from '
                              'node: {2}'.format(tag.name, tag.value, node.name))
                except (ValueError, AttributeError) as ex:
                    LOG.debug('Died removing tag: {0}'.format(ex))
                    DBSession.remove(audit)
                except Exception as ex:
                    LOG.debug('Died removing tag: {0}'.format(ex))
                    DBSession.remove(audit)

            LOG.debug('Final tags: {0}'.format([tag.name for tag in node.tags]))
            DBSession.add(node)
        DBSession.flush()

    except (NoResultFound, AttributeError):
        return api_404(msg='tag not found')
    except MultipleResultsFound:
        msg = 'Bad request: node_id is not unique: {0}'.format(node_id)
        return api_400(msg=msg)
    except Exception as ex:
        LOG.error('Error removing all tags from node. exception={0}'.format(ex))
        return api_500()

    return resp

@view_config(route_name='api_b_tags_deassign', permission='tag_delete', request_method='DELETE', renderer='json')
def api_b_tagss_deassign(request):
    '''Process delete requests for the /api/bulk/tags/deassign route.
    Takes a list of nodes and deassigns all tags from them.'''

    try:
        payload = request.json_body
        node_ids = payload['node_ids']
        auth_user = get_authenticated_user(request)

        LOG.debug('Updating {0}'.format(request.url))

        try:
            resp = remove_tags(node_ids, auth_user)
        except KeyError:
            msg = 'Missing required parameter: {0}'.format(payload)
            return api_400(msg=msg)
        except Exception as ex:
            LOG.error('Error removing all tags from '
                      'node={0},exception={1}'.format(request.url, ex))
            return api_500(msg=str(ex))

        return api_200(results=resp)

    except Exception as ex:
        LOG.error('Error updating tags={0},exception={1}'.format(request.url, ex))
        return api_500(msg=str(ex))

```

Which of the following functions or classes contains a `CWE-117: Improper Output Neutralization for Logs` vulnerability?

  A) remove_tags
  B) api_b_tagss_deassign
Answer: B