Which of the following is the correct decreasing order of bond angles in the hydrides of group $15$ elements?
- A$NH_3 > PH_3 > AsH_3 > SbH_3$
- B$NH_3 > AsH_3 > PH_3 > SbH_3$
- C$SbH_3 > AsH_3 > PH_3 > NH_3$
- D$PH_3 > NH_3 > AsH_3 > SbH_3$
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