Given two fuzzy sets A and B A={(x1,0.5),(x2,0.1),(x3,0.4)} and B={(x1,0.2),(x2,0.3),(x3,0.5)} then union of 2 sets A U B is

• A. {(x1,0.5),(x2,0.1),(x3,0.4)}
• B. {(x1,0.5),(x2,0.3),(x3,0.5)}
• C. {(x1,0.2),(x2,0.3),(x3,0.5)}
• D. {(x1,0.2),(x2,0.1),(x3,0.4)}