Choose the correct statements about the hydrides of group 15 elements. A. The stability of the hydrides decreases in the order NH_3> PH_3> AsH_3>…

Choose the correct statements about the hydrides of group $\displaystyle 15$ elements. A. The stability of the hydrides decreases in the order $\displaystyle \mathrm{NH}_3>\mathrm{PH}_3>\mathrm{AsH}_3>$ $\displaystyle \mathrm{SbH}_3>\mathrm{BiH}_3$. B. The reducing ability of the hydride increases in the order $\displaystyle \mathrm{NH}_3<\mathrm{PH}_3<\mathrm{AsH}_3$ $\displaystyle <\mathrm{SbH}_3<\mathrm{BiH}_3$. C. Among the hydrides, $\displaystyle \mathrm{NH}_3$ is strong reducing agent while $\displaystyle \mathrm{BiH}_3$ is mild reducing agent. D. The basicity of the hydrides increases in the order $\displaystyle \mathrm{NH}_3<\mathrm{PH}_3<\mathrm{AsH}_3<$ $\displaystyle \mathrm{SbH}_3<\mathrm{BiH}_3$. Choose the most appropriate from the options given below: