Taryn is taking a group of students and adults to the local zoo. as advertised, the cost of an adult ticket, y, is at least 50% higher than the cost of a student ticket, x. taryn's goal is to spend less than $270. if taryn plans to purchase 4 adult tickets and 12 student tickets, which of the following is true?     a.  if student tickets cost $13.00 and adult tickets cost $28.00, the ticket prices are as advertised and taryn will meet her goal.  b.  if student tickets cost $14.00 and adult tickets cost $26.00, the ticket prices are as advertised and taryn will meet her goal.  c.  if student tickets cost $15.00 and adult tickets cost $22.50, the ticket prices are as advertised and taryn will meet her goal.  d.  if student tickets cost $12.00 and adult tickets cost $16.00, the ticket prices are as advertised and taryn will meet her goal.