P X Q means ' P is the mother of Q'
P + Q means ' P is the brother of Q'
P - Q means 'P is the sister of Q'
P ÷ Q means 'P is the father of Q'
Which of the following shows 'A is the maternal uncle of B' ?
AA ÷ C X D + B
BA X E ÷ D + B
CA + E ÷ B - C
DA ÷ C X D - B