How would I simplify this code?

Question

boolean f(boolean A, boolean B, boolean C, boolean D, boolean E)
{
  if (A)
  {
    k();
    if (B)
    {
      m();
      if (C)
      {
        n();
        if (D)
        {
          p();
          if (E)
          {
            q();
            return true;
          }
          else
          {
            r();
            return false;
          }
        }
        else
        {
          s();
          return false;
        }
      }
      else
      {
        t();
        return false;
      }
    }
    else
    {
      v();
      return false;
    }
  }
  else
  {
    w();
    return false;
  }
}

Answer 1

Probably only by flattening the ifs by evaluating the conditions more than once:

if (A) k(); else w();
if (A && B) m(); else if(A && !B) v();
if (A && B && C) n(); else if (A && B && !C) t();
if (A && B && C && D) p(); else if (A && B && C && !D) s();
if (A && B && C && D && E) q(); else if (A && B && C && D && !E) r();

return (A && B && C && D && E);