Change the degree of comparison of the sentence given below. This is the ideal solution to the problem. (a) This the most ideal solution to the problem. (b) This is the idealest solution to the problem. (c) This solution to the problem is more ideal than all others. (d) This solution to the problem is idealer than all others.

• A. Only (a) and (c) are right
• B. Only (b) and (d) are right
• C. All are right
• D. None is right