Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Randomized,Double-blind,Multicenter Phase III Trial to Evaluate the Safety and Efficacy of Icotinib and Gefitinib in Advanced NSCLC Patients Previously Treated With Chemotherapy
Brief Summary: The purpose of this study is to determine whether Icotinib is at least non-inferior to Gefitinib in the treatment of advanced non-small cell lung cancer (NSCLC) patients after one or two chemotherapies.


Options:
A: Inclusion Criteria:

* Histologic or cytologic diagnosis non-small cell lung cancer (NSCLC) (Stage IIIB or IV)
* Have not received any prior chemotherapy, molecular therapy, immunotherapy, biological therapy, or radiotherapy. Exception: palliative radiotherapy that is completed at least 4 weeks prior to study enrolment.
* Have 'never smoked' (defined as having smoked \<100 cigarettes during his/her lifetime)
* Eastern Cooperative Oncology Group (ECOG) performance status 0 to 1

Exclusion Criteria:

* Concurrent administration of any other tumor therapy
* Other co-existing malignancies
* Pregnancy or breast feeding
* Serious concomitant disorders
* Inability or unwillingness to take folic acid or vitamin B12 supplementation
B: Inclusion Criteria:

* Locally advanced Stage IIIB not amenable to local therapy or Stage IV (metastatic) NSCLC with adenocarcinoma histology.
* Never smokers or light ex-smokers.(ceased smoking at least 15 years before Day 1 of study treatment and 10 pack-years or fewer)

Exclusion Criteria:

* Had prior chemotherapy, biological (including targeted therapies such as EGFR and vascular epidermal growth factor (VEGF) inhibitors) or immunological therapy.
* Pre-existing idiopathic pulmonary fibrosis evidence by CT scan at baseline.
C: Inclusion Criteria:

1. Confirmed NSCLC with Histology or cytology; advanced （IIIb/IV).
2. Must have received 1 or 2 chemotherapy (at least 1 is platin based)before, and prior chemotherapy must be completed at least 4 weeks before study enrollment; =.

Exclusion Criteria:

1. Previous usage of EGFR-TKI or antibody to EGFR: gefitinib, erlotinib, herceptin, erbitux.
D: Inclusion Criteria:

* More than 18 years of age
* Histologically documented non-small cell lung cancer with metastasis (Stage IV) or locally advanced (Stage IIIB) with malignant effusion.
* At least 1 measurable lesion as defined by RECIST1.0. All target lesions must have a unidirectional diameter of at least 1cm. Baseline measurements must be compared within 4 weeks prior to enrollment.
* ECOG PS 0-2
* At least 1 week since the last radiotherapy. Patients must have recovered from all acute toxicities from radiotherapy.
* Patients must have adequate hematologic, renal and liver function as defined by Hb \> 9g/dL, neutrophils \> 1000/mm3, platelets \> 50,000/mm3, creatinine \< 2mg/dL, and AST (SGOT) and/or ALT (SGPT) \< 5 x UNL (upper normal limit).
* Willingness and ability to comply with scheduled visits, treatment plans, laboratory tests and other study procedures.
* Written and voluntary informed consent understood, signed and dated.

Exclusion Criteria:

* Patients with tumor harboring EGFR mutation.
* Prior systemic therapy for NSCLC
* Non-smoking patients with adenocarcinoma. But if those patients show wild type EGFR, they are eligible to this study.
* Symptomatic brain metastasis. Brain metastases stable \< 2 weeks before dosing or requiring concurrent steroid treatment or with clinical symptoms.
* Major surgery within 3 weeks prior to study enrollment.
* Previous (less than 3 years ago) or current malignancies at sites other than curatively treated in situ carcinoma of cervix, or basal or squamous cell carcinoma of the skin.
* Severe medical illness or active infection that would impair the ability to receive gefitinib.
* Pregnancy or breast feeding.

Answer: C