Please assess the completion status of the following clinical trial:

Trial Title: Subject Preference for Scalp Psoriasis Treatment

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: CROSSOVER
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: SINGLE
- Phase: PHASE3
- Number of Arms: 6.0

Eligibility Criteria:
Inclusion Criteria:~* Male or female subjects, 18 years of age or older,~* Subjects with moderate to severe scalp psoriasis,~* Subjects who signed written informed consent prior to any study procedures.~Exclusion Criteria:~* Subjects who need systemic treatment for their body psoriasis,~* Subjects who are at risk in terms of precautions, warnings and contra-indication,~* Female subjects who are pregnant, nursing or planning a pregnancy during the study,~* Subjects with a specific washout period for topical treatment(s) on the scalp,~* Subjects with a specific washout period for systemic treatment(s).

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- C. propionate-Wash out-Corticosteroid 1 (Type: ACTIVE_COMPARATOR): Clobetasol propionate Shampoo:~* Dose or Concentration: Clobetasol propionate 0.05% shampoo~* Mode and Frequency of Administration: Topical Once daily to the dry scalp, to be lathered and rinsed after 15 minutes~* Duration of Treatment: 4 weeks as a maximum~Wash-out up to 8 weeks~Corticosteroid 1:~* Dose or Concentration: Corticosteroid 1 Foam~* Mode and Frequency of Administration:Twice daily, a golf-ball sized amount to be massaged into the affected area of the scalp~* Duration of Treatment: 4 weeks as a maximum
- C. propionate-Wash out-Corticosteroid 2 (Type: ACTIVE_COMPARATOR): Clobetasol propionate Shampoo:~* Dose or Concentration: Clobetasol propionate 0.05% shampoo~* Mode and Frequency of Administration: Topical Once daily to the dry scalp, to be lathered and rinsed after 15 minutes~* Duration of Treatment: 4 weeks as a maximum~Corticosteroid 2:~* Dose or Concentration: Corticosteroid 2 Lotion~* Mode and Frequency of Administration: Twice daily, a thin film to be applied to the affected area of the scalp and massaged gently and thoroughly into the skin~* Duration of Treatment: 4 weeks as a maximum
- C. propionate-Wash out-Corticosteroid 3 (Type: ACTIVE_COMPARATOR): Clobetasol propionate Shampoo:~* Dose or Concentration: Clobetasol propionate 0.05% shampoo~* Mode and Frequency of Administration: Topical Once daily to the dry scalp, to be lathered and rinsed after 15 minutes~* Duration of Treatment: 4 weeks as a maximum~Corticosteroid 3:~* Dose or Concentration: Corticosteroid 3 Scalp application~* Mode and Frequency of Administration: Twice daily, a thin film to be applied into the affected area of the dry scalp and rubbed gently into the scalp~* Duration of Treatment: 4 weeks as a maximum
- Corticosteroid 1-Wash out-C. propionate (Type: ACTIVE_COMPARATOR): Clobetasol propionate Shampoo:~* Dose or Concentration: Clobetasol propionate 0.05% shampoo~* Mode and Frequency of Administration: Topical Once daily to the dry scalp, to be lathered and rinsed after 15 minutes~* Duration of Treatment: 4 weeks as a maximum~Corticosteroid 1:~* Dose or Concentration: Corticosteroid 1 Foam~* Mode and Frequency of Administration:Twice daily, a golf-ball sized amount to be massaged into the affected area of the scalp~* Duration of Treatment: 4 weeks as a maximum
- Corticosteroid 2-Wash out-C. propionate (Type: ACTIVE_COMPARATOR): Clobetasol propionate Shampoo:~* Dose or Concentration: Clobetasol propionate 0.05% shampoo~* Mode and Frequency of Administration: Topical Once daily to the dry scalp, to be lathered and rinsed after 15 minutes~* Duration of Treatment: 4 weeks as a maximum~Corticosteroid 2:~* Dose or Concentration: Corticosteroid 2 Lotion~* Mode and Frequency of Administration: Twice daily, a thin film to be applied to the affected area of the scalp and massaged gently and thoroughly into the skin~* Duration of Treatment: 4 weeks as a maximum
- Corticosteroid 3-Wash out-C. propionate (Type: ACTIVE_COMPARATOR): Clobetasol propionate Shampoo:~* Dose or Concentration: Clobetasol propionate 0.05% shampoo~* Mode and Frequency of Administration: Topical Once daily to the dry scalp, to be lathered and rinsed after 15 minutes~* Duration of Treatment: 4 weeks as a maximum~Corticosteroid 3:~* Dose or Concentration: Corticosteroid 3 Scalp application~* Mode and Frequency of Administration: Twice daily, a thin film to be applied into the affected area of the dry scalp and rubbed gently into the scalp~* Duration of Treatment: 4 weeks as a maximum

Based on this trial design, predict the completion outcome and termination type (if applicable).

Answer: outcome: complete