Please select the eligibility criteria that correspond to the clinical trial below.
Title: Phase IIIb Open-label Induction and Double-blind Comparison of 2 Maintenance Schedules Evaluating Clinical Benefit and Tolerability of Certolizumab Pegol in Crohn's Disease Patients With Prior Loss of Response or Intolerance to Infliximab
Brief Summary: To assess the clinical efficacy of subcutaneous (sc) certolizumab pegol administration over 26 weeks in patients suffering from Crohn's Disease (CD) and previously treated with infliximab


Options:
A: Inclusion Criteria:

* Participation in either of the CDP870-031 \[NCT00152490\] or CDP870-032 \[NCT00152425\] clinical studies in which the subject completed the trial at Week 26. Subjects may have received active or placebo or both treatments in the prior study
* Subjects must be able to understand the information provided to them and give written informed consent

Exclusion Criteria:

* Any exclusion criterion that would have prevented the subject's participation in the qualifying pivotal study CDP870-031 \[NCT00152490\] or CDP870-032 \[NCT00152425\], although the criterion that excludes previous participation in a clinical trial of Certolizumab Pegol does not apply. In addition there are no limits on the Clinical Disease Activity Index (CDAI) score at entry
B: Inclusion Criteria:

* male/female
* 18 - 75 years inclusive
* diagnosis of Crohn's disease confirmed
* moderate to severe disease activity (Crohn's Disease Activity Index (CDAI) 225 - 450)
* no previous treatment with anti-tumor necrosis factor (anti-TNF) medications

Exclusion Criteria:

* previous participation in a certolizumab pegol study
* general exclusion criteria as common for studies in this indication
C: Inclusion Criteria:

* Subjects with Crohn's Disease
* Previous treatment failure to Infliximab (intolerance and/or no response)

Exclusion Criteria:

* Obstructive intestinal strictures
* Recent bowel resection
* Proctocolectomy or total colectomy
* Current total parenteral nutrition
* Short bowel syndrome
* All concomitant diseases or pathological conditions that could interfere with Crohn's disease assessment or to be harmful for the well being of the patient
* Previous clinical trials and previous biological therapy that could interfere with the results in the present clinical trial
D: Inclusion Criteria:

* Patients suffering from active Crohn's disease \[Crohn's Disease Activity Index(CDAI) ≥ 220 and ≤ 450\] and at least 2 segments with endoscopic ulcerative lesions with Baseline Crohn's Disease Endoscopic Index of Severity (CDEIS) ≥ 8
* Patients who need to be treated by anti-tumor necrosis factor (anti-TNF) therapy

Exclusion Criteria:

* Obstructive intestinal strictures, bowel resection, proctocolectomy or total colectomy, current total parenteral nutrition, short bowel syndrome
* History of tuberculosis or positive tests for tuberculosis at screening
* All the concomitant diseases or pathological conditions that could interfere with Crohn's disease assessment or to be harmful for the well being of the patient
* Previous clinical trials and previous biological therapy that could interfere with the results in the present clinical trial

Answer: C