Among 6 persons U, V, W, X, Y and Z, it is known that; U is taller than at-least 3 persons. W is taller than V, who is taller than exactly 1 person. X is not shorter than W. Y is taller than U and X is shorter than U. Who is 4th tallest among them?
1
U
2
W
3
X
4
V