human
Solve the following python programming problem given the following code:
@ lower ('np.random.standard_t', types.Float) 
def standard_t_impl(context, builder, sig, args) : 
    def standard_t_impl(df) : 
        N = np.random.standard_normal () 
        G = np.random.standard_gamma ((df / 2.0)) 
        X = ((math.sqrt ((df / 2.0)) * N) / math.sqrt (G)) 
        return X 
res = context.compile_internal (builder, standard_t_impl, sig, args) 
    return impl_ret_untracked (context, builder, standard_t_impl.return_type, res) 

    
    

    Fix the buggy line: return impl_ret_untracked (context, builder, standard_t_impl.return_type, res)
assistant
#Here is Python program to fix the buggy line: return impl_ret_untracked (context, builder, standard_t_impl.

return impl_ret_untracked (context, builder, sig.return_type, res)