Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: Twitter-enabled Mobile Messaging for Smoking Relapse Prevention
Brief Summary: We conducted a two-arm (test vs. control, N=160) randomized controlled trial of small, private, online support groups for quitting smoking with 20 people per group who were seeking to quit smoking. A novel feature was a bot (auto-messenger) that posted a daily cessation-related discussion topic in each group, timed to the group's quit date.


Options:
A: Arm Label: Twitter; Type: EXPERIMENTAL; Interventions: Behavioral: smoking cessation aides, Behavioral: Twitter | Arm Label: Control; Type: ACTIVE_COMPARATOR; Interventions: Behavioral: smoking cessation aides | Intervention Type: BEHAVIORAL; Name: smoking cessation aides; Assigned to Arm(s): Control, Twitter | Intervention Type: BEHAVIORAL; Name: Twitter; Assigned to Arm(s): Twitter
B: Arm Label: Telephone counselling; Type: EXPERIMENTAL; Interventions: Device: Standard 15-minute telephone counselling, Device: Proactive telephone counselling | Arm Label: Proactive telephone counselling; Type: EXPERIMENTAL; Interventions: Device: Proactive telephone counselling | Arm Label: web-based smoking cessation programme; Type: EXPERIMENTAL; Interventions: Device: Interactive web-based smoking cessation programme | Arm Label: Self-help material; Type: ACTIVE_COMPARATOR; Interventions: Device: Self-help material | Intervention Type: DEVICE; Name: Standard 15-minute telephone counselling; Assigned to Arm(s): Telephone counselling | Intervention Type: DEVICE; Name: Proactive telephone counselling; Assigned to Arm(s): Proactive telephone counselling, Telephone counselling | Intervention Type: DEVICE; Name: Interactive web-based smoking cessation programme; Assigned to Arm(s): web-based smoking cessation programme | Intervention Type: DEVICE; Name: Self-help material; Assigned to Arm(s): Self-help material
C: Arm Label: Group A; Type: EXPERIMENTAL; Interventions: Behavioral: HAR, Behavioral: AWARD, Other: Referral card, Other: A4 leaflet | Arm Label: Group B; Type: EXPERIMENTAL; Interventions: Behavioral: LTM, Behavioral: AWARD, Other: Referral card, Other: A4 leaflet | Arm Label: Group C; Type: ACTIVE_COMPARATOR; Interventions: Behavioral: Brief advice, Other: 12-page booklet | Intervention Type: BEHAVIORAL; Name: HAR; Assigned to Arm(s): Group A | Intervention Type: BEHAVIORAL; Name: LTM; Assigned to Arm(s): Group B | Intervention Type: BEHAVIORAL; Name: AWARD; Assigned to Arm(s): Group A, Group B | Intervention Type: OTHER; Name: Referral card; Assigned to Arm(s): Group A, Group B | Intervention Type: OTHER; Name: A4 leaflet; Assigned to Arm(s): Group A, Group B | Intervention Type: BEHAVIORAL; Name: Brief advice; Assigned to Arm(s): Group C | Intervention Type: OTHER; Name: 12-page booklet; Assigned to Arm(s): Group C
D: Arm Label: AAR+Behavioral Intervention (EXP); Type: EXPERIMENTAL; Interventions: Behavioral: Ask, Advise, Refer, Behavioral: Telebased tobacco counseling, Device: Mobile phone smoking cessation application, Drug: Nicotine polacrilex | Arm Label: AAR+Attention Control Intervention (CTL); Type: ACTIVE_COMPARATOR; Interventions: Behavioral: Ask, Advise, Refer, Behavioral: Telebased nutrition counseling, Device: Mobile phone nutrition application | Intervention Type: BEHAVIORAL; Name: Ask, Advise, Refer; Assigned to Arm(s): AAR+Attention Control Intervention (CTL), AAR+Behavioral Intervention (EXP) | Intervention Type: BEHAVIORAL; Name: Telebased tobacco counseling; Assigned to Arm(s): AAR+Behavioral Intervention (EXP) | Intervention Type: BEHAVIORAL; Name: Telebased nutrition counseling; Assigned to Arm(s): AAR+Attention Control Intervention (CTL) | Intervention Type: DEVICE; Name: Mobile phone smoking cessation application; Assigned to Arm(s): AAR+Behavioral Intervention (EXP) | Intervention Type: DEVICE; Name: Mobile phone nutrition application; Assigned to Arm(s): AAR+Attention Control Intervention (CTL) | Intervention Type: DRUG; Name: Nicotine polacrilex; Assigned to Arm(s): AAR+Behavioral Intervention (EXP)

Answer: A