\begin{document}$ R_{K^+} $\end{document}, \begin{document}$ R_{K_S^0} $\end{document}, \begin{document}$ R_{K^{*+}} $\end{document}, \begin{document}$ B_s\to\mu^+\mu^- $\end{document}, a set of CP-averaged angular observables for the \begin{document}$ B^0\to K^{*0}\mu^+\mu^- $\end{document} decay and its isospin partner \begin{document}$ B^+\to K^{*+}\mu^+\mu^- $\end{document} by the LHCb Collaboration consistently hint at lepton universality violation in the \begin{document}$ b\to s\ell\ell $\end{document} transitions. In this work, we first perform global fits to the \begin{document}$ b\to s\ell\ell $\end{document} data and show that five one-dimensional scenarios, i.e, \begin{document}$ \delta C_9^{\mu} $\end{document}, \begin{document}$ \delta C_{10}^{\mu} $\end{document}, \begin{document}$ \delta C_L^{\mu} $\end{document}, \begin{document}$ \delta C_9^{\mu}=C_{10}^{\mu\prime} $\end{document}, and \begin{document}$ \delta C_9^{\mu}=-C_9^{\mu\prime} $\end{document} can best explain the so-called B anamolies. Furthermore, we explore how these scenarios can be distinguished from each other. For this purpose, we first study the combinations of four angular asymmetries \begin{document}$ A_i ~~(i=3,4,5,9) $\end{document} and find that they cannot distinguish the five new physics scenarios. We then show that a newly constructed ratio \begin{document}$ R_{S} $\end{document} can uniquely discriminate the five new physics scenarios in proper intervals of \begin{document}$ q^2 $\end{document} if it can be measured with percent-level precision."> Discriminating 1D new physics solutions in <i>b</i> → <i>sℓℓ</i> decays -
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