Please assess the completion status of the following clinical trial:

Trial Title: Optimizing Vitamin D in the Elderly

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: None
- Time Perspective: None
- Masking: SINGLE
- Phase: None
- Number of Arms: 4.0

Eligibility Criteria:
Inclusion Criteria:~* age over 65~* medically stable~* residing in long-term care or assisted living~Exclusion Criteria:~* hypercalcemia or high risk for hypercalcemia~* active cancer or malignancy other than non-melanoma skin cancer~* severe renal disease (eGFR \<30 ml/mkin/M2)~* small bowel resection or intestinal bypass surgery~* hyperparathyroidism~* granulomatous disease~* clinically unstable (changes in medications or diagnoses within a month, hospitalizations, within 6 months)~* allergy to vitamin D

- Gender: ALL
- Minimum Age: 65 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- vitamin D3 800 IU/day (Type: EXPERIMENTAL): recommended daily dosage of 800 IU/day D3
- 2000 IU/day D3 (Type: EXPERIMENTAL): D3 2000 IU/day
- vitamin D3 4000 IU/day (Type: EXPERIMENTAL): D3 4000 IU/day
- 50,000 IU/week D3 (Type: EXPERIMENTAL): D3 50,000 IU weekly

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