23. An electron stays in an infinitely deep square well potential of width L = 2.1×10⁻¹⁰ (m). Suppose that the electron is in the ground state and the probability of finding the electron in a region Δx is given by P0 = |ψ|² Δx, where ψ is the ground state wave function obtained from the Schrodinger equation. Calculate the probability P0 of finding the electron in a region of width Δx = 1.2×10⁻¹² (m) at the center of the well. (A) 1.1×10⁻² (B) 3.9×10⁻⁴ (C) 5.2×10⁻⁶ (D) 8.2×10⁻⁸