The conditional relative frequency table was generated using data that compared the cost of one ticket for a performance and the method by which the ticket was purchased. a 4-column table with 3 rows titled ticket purchases. the first column has no label with entries purchased online, purchased at the box office, total. the second column is labeled no more than $30 with entries 0.7, 0.3, 1.0. the third column is labeled more than $30 with entries 0.86, 0.14, 1.0. the fourth column is labeled total with entries 0.82, 0.18, 1.0. given that lorenzo paid more than $30 for a ticket, what is the probability that he purchased the ticket at the box office?
a.0.14
b. 0.18
c. 0.30
d.0.86