Probability problem and solution

Currently there are two odd numbers and two prime numbers so the chances of landing on an odd number or a prime number are the same. By adding 3, 5 or 11 you would be adding one prime number and one odd number so the chances would remain equal. By adding 9 you would be adding an odd number but not a prime number. There would be three odd numbers and two prime numbers so the spinner would be more likely to land on an odd number than a prime number. An odd number is any integer that cannot be exactly divided by 2. In other words, when divided by 2, there is always a remainder of 1. For example, 1, 3, 5, 7, and 9 are odd numbers. A prime number is a natural number greater than 1 that cannot be formed by multiplying two smaller natural numbers. In other words, a prime number has only two positive divisors: 1 and itself. Examples of prime numbers include 2, 3, 5, 7, 11, and 13. It’s important to note that 2 is the only even prime number, as all other even numbers are divisible by 2. Problem: Which number could be added to this spinner to make it more likely that the spinner will land on an odd number than a prime number? A) 3 B) 9* C) 5 D) 11