Suppose P(A)=0.4,P(B)=0.3,P(C)=0.2P(A)=0.4, P(B)=0.3, P(C)=0.2P(A)=0.4,P(B)=0.3,P(C)=0.2 are mutually exclusive events. What is P(A∣A∪B∪C)P(A|A \cup B \cup C)P(A∣A∪B∪C)?
49\frac{4}{9}94
12\frac{1}{2}21
23\frac{2}{3}32
410\frac{4}{10}104