Given the following HTML form snippet of markup, which of the following user inputs would meet the regular expression rule written in the pattern attribute?

Given the regular expression as follows:

[A-Za-z19]{5}

The acceptable input is a code with five characters and each character can consist of uppercase lowercase of alphabet from A-Z or a-z and digit 1 and digit 9. The examples of input that meet the regular expression rule are as follows:

abx11

Acd19

CAD19

Explanation:

The characters specified within the square bracket in regular expression are the character sets that meet the rule. A-Z and a-z means all the uppercase and lowercase English alphabet are acceptable. 19 means digit 1 and 9 are part of acceptable character sets. The 5 enclosed by the curly bracket, {5}, means it must have exact five occurrences of characters.

answer; ( blue box );