Please write this code in "Assembly"

Write a simple Assembly Language program that declares a string in the data section: .data string: .asciiz" ABCDEFG" and converts the string to all lower-case characters. Do this by adding 0x20 to each character in the string. (See Appendix F to figure out why this works.) Assume that the data consists only of upper-case alphabetical characters, with no spaces or punctuation