Please assess the completion status of the following clinical trial:

Trial Title: Clinical Outcomes of Slow Developing Blastocysts

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: NONE
- Phase: None
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* All IVF cycles undergoing autologous fresh blastocyst embryo transfer~* All IVF cycles in which the best available embryo for transfer is at expansion grade \<4~* All ages~Exclusion Criteria:~* Ovum Donation cycles~* Preimplantation genetic testing cycles

- Gender: FEMALE
- Minimum Age: 18 Years
- Maximum Age: 44 Years
- Healthy Volunteers: t

Study Arms:
- Fresh ET (Type: NO_INTERVENTION): The best available embryo is at expansion grade \<4 by Gardner classification 5 days after oocyte retrieval. Patient's embryos are cultured to day 6 and transferred regardless of expansion grade. Arrested blastocysts are discarded.
- Frozen Embryo Transfer (Type: EXPERIMENTAL): The best available embryo is at expansion grade \<4 by Gardner classification 5 days after oocyte retrieval. Patient's embryos are cultured to day 6 and vitrified regardless of expansion grade. Arrested blastocysts are discarded. The single best available embryo is transferred under a cryo-synthetic cycle.

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