A ²³⁵₉₂U nucleus was bombarded with a neutron, resulting in two other neutrons, ⁹⁰₃₇Rb, and another nucleus. What is ^A_ZX in the following balanced nuclear fission reaction equation?
²³⁵₉₂U + ¹₀n → ⁹⁰₃₇Rb + ^A_ZX + 2 ¹₀n 

• A. ¹⁴⁵₅₅Cs
• B. ¹⁴⁴₅₅Cs
• C. ¹⁴⁵₅₄Xe
• D. ¹⁴⁴₅₄Xe

Answer: (B)