Suppose z =f(x,y), where x and y are functions of t. Determine the number of dependent, intermediate, and independent variables there are. Choose the correct answer below.
A. There is one dependent variable, there are two intermediate variables, and there is one independent variable.
B. There is one dependent variable, there is one intermediate variable, and there are two independent variables.
C. There is one dependent variable and there are three independent variables.
D. There are three dependent variables and there is one independent variable