Identify which among the isotope symbols below is incorrect.
(i) ⁴⁰₁₉P  (ii) ¹²⁰₅₀Sn  (iii) ²⁹₆₃Cu   (iv) ¹⁰⁹₄₇Au  (v) ⁵⁸₂₆Fe

• A. (i), (ii), and (v)
• B. (iii) and (iv)
• C. (i) and (iv)
• D. (ii), (iv), and (v)
• E. (i), (iii) and (iv)

Answer: (E)