Select from each set the molecule or ion having the smallest bond angle:
(i) NH₃, PH₃, or AsH₃
(ii) O₃⁺, O₃
(iii) NO₂⁻ or O₃
(iv) X−S−X angle in SOCl₂ and SOF₂

A. NH₃, O₃⁺, O₃, SOCl₂
B. PH₃, O₃⁺, NO₂⁻, SOF₂
C. AsH₃, O₃, NO₂⁻, SOF₂
D. AsH₃, O₃⁺, O₃, SOF₂