The predictive value of a positive test is defined as :

$($true positives $+$ true negatives$)/$ true positives $100$

B$)$ True positives$/($true positives $+$ false positives $)100$

C$)($true positives $+$ true negatives$)/$true negatives $100$

D True negatives$/($true negatives $+$ false positives$)100$