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(B) When three coins are tossed,the sample space $S$ is given by:$S = \{HHH, HHT, HTH, HTT, THH, THT, TTH, TTT\}$An event is called a simple event if

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$A$ and $C$

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(B) When three coins are tossed,the sample space $S$ is given by:$S = \{HHH, HHT, HTH, HTT, THH, THT, TTH, TTT\}$An event is called a simple event if it contains only one sample point of the sample space.$A = \{HHH\}$ (contains $1$ sample point,so it is a simple event)$B = \{HHT, HTH, THH\}$ (contains $3$ sample points,so it is a compound event)$C = \{TTT\}$ (contains $1$ sample point,so it is a simple event)$D = \{HHH, HHT, HTH, HTT\}$ (contains $4$ sample points,so it is a compound event)Thus,$A$ and $C$ are simple events.

Three coins are tossed once. Let $A$ denote the event 'three heads show',$B$ denote the event 'two heads and one tail show',$C$ denote the event 'three tails show',and $D$ denote the event 'a head shows on the first coin'. Which events are simple?

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