What IPv6 field is similar to the TTL field in IPv4 packets?

Match the following field types with their explanation

I. Binary A. Used for long text or combinations of text and numbers II. Integer B. Used for values included in calculations III. Memo C. Used for any type of data IV. Number D. Default field type used for text and numbers up to 255 characters V. Text E. Used for whole numbers

Assume x = 4, which of the following is true?

a. !(x == 4) b. x != 4 c. x == 5 d. x != 5