If a card is drawn from a well shuffled pack of cards, the probability of drawing a spade or a king is ?	Choose the correct option: A) 4 / 15 B) 4 / 10 C) 4 / 18 D) 4 / 13 E) 4 / 11

Rationale: "p ( s ᴜ k ) = p ( s ) + p ( k ) - p ( s ∩ k ) , where s denotes spade and k denotes king . p ( s ᴜ k ) = 13 / 52 + 4 / 52 - 1 / 52 = 4 / 13 answer : d"
Answer: D