Please select the eligibility criteria that correspond to the clinical trial below.
Title: Using Group Commitment for Smoking Cessation
Brief Summary: This study proposes a novel behavioral intervention to help smokers in Thailand to achieve their goals of quitting. Smoking treatment programs are rare throughout most of Asia and unlikely to meet the impending demand for quitting that tobacco control regulations is stimulating. New approaches are needed.

The present study is a randomized controlled trial to test the effectiveness of a novel, scalable approach to smoking cessation that is targeted toward rural Southeast Asian communities. Thailand is used as a test case to explore if pairs of smokers quit successfully after making financially-backed commitments and receiving cash incentives to quit. The control group receives education and counseling about quitting. In addition to education and counseling about quitting, the intervention includes two key components:

1. Each participant is encouraged to deposit his "cigarette money" on a weekly basis, to be returned only if the smoker quits successfully within three months. Such commitment contracts, based on theory from behavioral economics, are designed to help a person to maintain self-control and motivation in the face of temptation.
2. Each participant is paired with another study participant. If both quit, each receives a cash bonus. The joint incentives are designed to lead partners to support each other throughout the quit attempt.

Thus, group commitment contracts marshal a robust blend of elements: financial commitment, social support, peer pressure, and monetary rewards. A larger, follow-up evaluation will clarify the relative importance of each of these elements.


Options:
A: Inclusion Criteria:

* Active smoker of 5 cigarettes per day for at least 6 months;
* At least 18 years old;
* Current full- or part-time employee of CVS or be a family member or friend of a current full- or part-time employee of CVS.

Exclusion Criteria:

* Use a form of tobacco other than cigarettes while participating in the study (as this may influence biochemical testing);
* Are unable or unwilling to access the internet;
* Are unable to provide informed consent.
* Due to the web-based nature of this study, people without reliable computer and internet access will also be excluded.
B: Inclusion Criteria:

* at least 18 years
* pregnant, gestation \<= 27 weeks
* cigarette smoking in the past week (even if only one puff)

Exclusion Criteria:

* inability to speak or understand spoken English
* do not intend to carry pregnancy to full term
* frank psychosis
C: Inclusion Criteria:

* Current smoker of at least 10 cigarettes per week and at least 100 cigarettes over the course of a lifetime
* Residents of the study area in Nakhon Nayok province, which includes the six subdistricts of Klong Yai, Chumpon, Bueng San, Pak Phli, Khao Phoem, or Ongkharak

Exclusion Criteria:

* Pregnant
* Plans to leave the study area within the next 12 months
D: Inclusion Criteria:

1. Pregnant women
2. At least 18 years old
3. Smoking at least 5 manufactured cigarettes or 3 rolled-on-your-own cigarettes
4. Of \<18 weeks of gestation
5. Motivated to quit smoking
6. Affiliated to social security system
7. And who signed the written informed consent form

Exclusion Criteria:

1. Psychiatric disorders
2. Use of other tobacco products (pipe, cigar, oral tobacco) than cigarettes
3. Use of bupropion or varenicline
4. Use of electronic cigarettes during the current pregnancy
5. Women already included in a biomedical research

Answer: C