Given sets​ A, B,​ C, and​ U, find the elements in A - ​B'.

A​ = {1​, 3​, 4​}

B = ​{3​, 4​, 5​}

C​ = {6​, ​7}

U = ​{0, ​1, 2,​ 3, 4,​ 5, 6,​ 7}

A - B = { }