$, @, ©. they are in different rows, false.
3) k @ w – forward line. symbols are @, ©, #. they are in different rows, false.
4) m @ n – forward line. symbols are $ and @. highest priority is for @. so m @ n is true.
only conclusion 4 is true.
statement: h @ t, t # f, f ∂ e, e © v.
1) v $ f – reverse line – symbols are © and ∂. both are in row 2. since it forms a reverse line, and highest priority is for ©, we should mark the symbol which is exactly opposite to ©. so the correct symbol is $. 