Identify the option that correctly combines the two sentences. I took the dog to the park. I brought a Frisbee.
a. I took the dog to the park and brought a Frisbee.
b. I took the dog to the park I brought a Frisbee.
c. I took the dog to the park but I brought a Frisbee.
d. I took the dog to the park or brought a Frisbee