Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 3 or 5?

Question

$( A ) \large\frac{1}{20} \\ ( B ) \large\frac{3}{20} \\ ( C ) \large\frac{9}{20} \\ ( D ) \large\frac{4}{20}$