Use the definitions for the sets given below to determine whether each statement is true or false:

A = { x Z: x is an integer multiple of 3 }

B = { x Z: x is a perfect square }

C = { 4, 5, 9, 10 }

D = { 2, 4, 11, 14 }

E = { 3, 6, 9 }

F = { 4, 6, 16 }

An integer x is a perfect square if there is an integer y such that x = y².

(i) {15} A

(j) A

(k) A A

(l) B