Pls help!!!
 Raj is having new grass planted in his front yard. The cost
 depends on the area of the yard.
 Which is the dependent variable, and which is the independent variable?
 O A. The dependent variable is the area of the yard, and the
 independent variable is the type of grass seed.
 O B. The dependent variable is the type of grass seed, and the
 independent variable is the cost.
 O C. The dependent variable is the cost, and the independent variable is
 the area of the yard.
 D. The dependent variable is the area of the yard, and the
 independent variable is the cost.