Nino, $55,$ is about to purchase a lifetime annuity with his personal pension fund. Which annuity structure would NOT be possible?$$ A joint life annuity, where any survivor$$s income would be paid to his wife Ellen.$$ A single life annuity with annuity protection where any annuity protection lump sum would be paid to his son Matt, $28$ & not a dependent upon him.$$ A joint life annuity with $50\%$ of the income paid to Nino & $50\%$ paid to his wife Ellen.$$ A joint life annuity, where any survivor$$s income would be paid to his daughter Sharon, $26$ & not dependent upon him.