Direct Speech: "If I had known about the change in the syllabus, I would have altered my study schedule," Rohan said.Choose the correct indirect speech conversion.a) Rohan said that if he knew about the change in the syllabus, he would alter his study schedule.b) Rohan said that if he had known about the change in the syllabus, he would have altered his study schedule.c) Rohan said that if he had had known about the change in the syllabus, he would have had altered his study schedule.d) Rohan sa