PA Picture BPAPBPA Picture B represents the formula for the

P(A Picture B)=P(A)+P(B)-P(A Picture B) represents the formula for the   

A Conditional Probability

Addition rule

Addition rule for two mutually exclusive events

Multiplication rule

Solution

P(AUB) = P(A)+P(B) - P(A INTERSECTION B)

THIS IS AN ADDITION RULE OF TWO SETS

BECAUSE IF THE SETS BEEN MUTUALLY EXCLUSIVE THEN THE INTERSECTION PART WILL BECOME ZERO

ALSO THE MULTIPLICATION RULE IS DIFFERENT AND ALSO THE CONDITION PROBABILITY INVOLVE DIVISION OF TWO SETS

HENCE THE ANSWER IS OPTION B ADDITION RULE.