Which statement is true?

Location tracking and positioning systems can be classified by different techniques. Which statement is true?
A. The ToA technique requires very precise knowledge of the transmission start times. To simplify this technique, TDoA does not require the use of asynchronized time source at the point of transmission, but the receivers still require time synchronization.
B. RSS is measured by either the mobile device or the receiving sensor. Knowledge of the transmitter output power allows you to calculate the distancebetween the two stations.
C. A common benefit of AoA compared to the other location tracking techniques is its susceptibility to multipath interference, which allows several anglecalculations and therefore very accurate positioning.
D. The LTP field in the CCX Payload information allows synchronization between transmitter and receivers to allow calculation of the position within 10meters during 90 percent of the time.

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