Three unbiased coins are tossed. What is the probability of getting at most 2 heads?	Select the correct option: A) 7 / 8 B) 5 / 8 C) 3 / 8 D) 7 / 5 E) 3 / 5

Rationale: "here s = { ttt , tth , tht , htt , thh , hth , hht , hhh } let e = event of getting at least two heads = { ttt , tth , tht , htt , thh , hth , hht } p ( e ) = n ( e ) / n ( s ) = 7 / 8 . answer a ."
Answer: A