Which of the following statements is false about Huawei's rail transportation wireless backhaul solution?

Huawei’s wireless backhaul solution for rail transportation supports applications such as video surveillance, train-to-ground communication, and infotainment systems. However, it is explicitly stated in Huawei documentation that this solution is not designed for or certified to carry the safety-critical train signaling systems, which typically require dedicated and highly regulated communication networks.

Options A, C, and D are true and backed by Huawei’s performance claims:

Handover delay can reach as low as 30 ms using dual-link active-active design.

Video backhaul is maintained even at speeds up to 160 km/h.