The following transmutations are used to produce transuranium elements. Identify the nuclide or particle designated as X. 
(i) ²⁴²Cm(α,n)X
(ii) ¹⁰B(n, X)⁷Li

• A. (i) X is ²⁴⁶₉₈Cf. The long-hand reaction is ²⁴²₉₆Cm + ⁴₂He → ²⁴⁶₉₈Cf + ¹₀n.
  (ii) X is ⁴₂β. The long-hand reaction is ¹⁰₅B + ¹₀n → ⁷₃Li + ⁴₂β.
• B. (i) X is ²⁴⁶₉₄Pu. The long-hand reaction is ²⁴²₉₆Cm + ⁴₂He → ²⁴⁶₉₄Pu + ¹₀n.
  (ii) X is ⁴₂β. The long-hand reaction is ¹⁰₅B + ¹₀n → ⁷₃Li + ⁴₂β.
• C. (i) X is ²⁴⁵₉₈Cf. The long-hand reaction is ²⁴²₉₆Cm + ⁴₂He → ²⁴⁵₉₈Cf + ¹₀n.
  (ii) X is ⁴₂He. The long-hand reaction is ¹⁰₅B + ¹₀n → ⁷₃Li + ⁴₂He.
• D. (i) X is ²⁴⁶₉₄Pu. The long-hand reaction is ²⁴²₉₆Cm + ⁴₂He → ²⁴⁶₉₄Pu + ¹₀n.
  (ii) X is ¹₁H. The long-hand reaction is ¹⁰₅B + ¹₀n → ⁷₃Li + X is ¹₁H.

Answer: (C)