Need help ASAP please give me right answer and I will give you brainliest and 30 points

Which best corrects the run-on sentence? the big dipper is easily spotted it looks like a cup with a long handle. a. the big dipper is easily spotted, so it looks like a cup with a long handle. b. the big dipper is easy. to spot it looks like a cup with a long handle. c. the big dipper is easily spotted. it looks like a cup with a long handle. d. the big dipper is easily spotted. looking like a cup with a long handle.