The integration of power transmission and transformation integrated transmission solutions does not include ().

The integration of power transmission and transformation integrated transmission solutions does not include ().
A . Industry integration, integration of industry needs, such as 2M optical interface, 2MASON
B . Communication technology convergence, converged communication technology development trend, such as SDH/OTN/PKT unified equipment
C . Client-side interface integration, integrating low-speed interfaces such as traditional PCM devices
D . Integration of advanced concepts and hot spots, such as 5G and WIFI6

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Answer: D