Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Randomized, Double-Blind Study Comparing the Safety & Efficacy of Once-Weekly Etanercept 50 mg, Etanercept 25 mg, & Placebo in Combination With Methotrexate in Subjects With Active Rheumatoid Arthritis
Brief Summary: To compare the efficacy of the combination of etanercept 50 mg once weekly plus methotrexate with that of methotrexate monotherapy in the treatment of rheumatoid arthritis over 88 weeks.


Options:
A: Inclusion Criteria:

* adult patients at least 18 years of age with moderate to severe active RA for at least 6 months;
* inadequate response to a stable dose of MTX;
* patients of reproductive potential must be using reliable methods of contraception.

Exclusion Criteria:

* major surgery (including joint surgery) within 8 weeks before entering study, or planned surgery within 6 months after entering study;
* prior treatment failure with an anti-tumor necrosis factor agent;
* women who are pregnant or breast-feeding.
B: Inclusion Criteria:

* Have a diagnosis of RA for at least 3 months prior to screening
* Have no history of latent or active tuberculosis (TB) and test negative for TB

Exclusion Criteria:

* Have inflammatory diseases other than RA
* Have been treated with disease-modifying anti-rheumatic drugs (DMARDs)/systemic immunosuppressives other than methotrexate (MTX), sulfasalazine, or hydroxychloroquine during the 4 weeks prior to the first administration of study agent
* Have received intramuscular (IM), IV, or intra-articular corticosteroids within 4 weeks of study agent administration
* Have a known hypersensitivity to human Ig proteins
* Have received infliximab, golimumab, adalimumab or abatacept within 3 months, or etanercept or anakinra within 1 month prior to the first administration of study agent
* Have received alefacept, efalizumab, natalizumab, rituximab, or any B-cell-depleting agent
* Have been treated with any other biologics or investigational drugs, within 5 half-lives of that drug prior to the first administration of study agent
* Have a history of latent or active granulomatous infection, including tuberculosis (TB), histoplasmosis, or coccidioidomycosis, prior to screening
* Have had a Bacille Calmette-Guerin (BCG) vaccination within 12 months of screening
* Have had a serious infection (eg, hepatitis, pneumonia, pyelonephritis, or sepsis)
C: Inclusion Criteria:

* Diagnosis of rheumatoid arthritis.
* Currently receiving an optimal dose of oral Methotrexate (MTX)(at least 15 mg/week but no more than 25 mg/week) for the treatment of rheumatoid arthritis.
* Active rheumatoid arthritis at the time of screening.

Exclusion Criteria:

* Previous or current treatment with etanercept, other tumor necrosis factor-alpha (TNF) inhibitors, or other biologic agents.
* Concurrent treatment with any disease-modifying anti-rheumatoid drugs (DMARD), other than MTX within 28 days before baseline.
* Concurrent treatment with more than 1 non-steroid anti-inflammatory drug (NSAID) at baseline.
D: Inclusion Criteria:

* Clinical diagnosis of Rheumatoid Arthritis
* Disease Activity Score (DAS)28-C-Reactive Protein (CRP) score ≥ 3.2 and ≤5.1
* On background methotrexate at least 3 months (≥10mg weekly)
* Must be able to self injection or allow a care giver to do it for them
* Discontinue all Biologics and Disease-Modifying Anti-rheumatic Drugs (DMARDs) except for methotrexate

Exclusion Criteria:

* Participants who had prior exposure to abatacept or CTLA-4 Ig
* Received treatment with rituximab.
* Participants who have received treatment with leflunomide within 1 year of screening
* Participants who have received treatment with immunoadsorption columns (such as Prosorba columns), mycophenolate mofetil (Cellcept®), cyclosporine A or other calcineurin inhibitors, or D-Penicillamine.

Answer: C