Identify the independent variable and dependent variables, and the rule in function notation.
A ticket costs 60$
A. independent: number of tickets ;dependent; cost ; rule: f(t)=60t
B. independent; cost; dependent;number of tickets ;rule: f (60t)=t
C. Independent; number of tickets ;dependent; cost; rule:f(60t)=t
D. independent;cost;dependent;number of tickets ;rule: f(t)=t +60