In a certain encryption, code letters are used to replace the actual letters of a word. There are some rules to be followed in this encryption as well. The code letters and the rules are provided below. In each of the questions, select the option that best describes the encrypted code for the words using the code and the rules.

Rules: 1) If both the first letter and the last letter of the given expression are numbers, the encrypted code for every number in the word is $. The rest of the letters follow the code as usual.
2) If the first letter is an alphabet and the last letter a number, the encrypted code for every alphabet in the word is $. The rest of the letters follow the code as usual.
3) If the first letter is a number and the last letter an alphabet, the encrypted code for every alternative letter starting from the left is $. The rest of the letters follow the code as usual.