Answer:
Your answer is option C, or the third option.
They do not let the user type in letters, numbers, and words.
Step-by-step explanation:
Strings are defined as a sequence of characters literal, constant, or variable. These sequences are like an array of data or list of code that represents a structure. Formally in a language, this includes a finite(limited) set of symbols derived from an alphabet. These characters are generallu given a maximum of one byte of data each character. In longer languages like japanese, chinese, or korean, they exceed the 256 character limit of an 8 bit byte per character encoding because of the complexity of the logogram(character representing a morpheme((which is the simpliest morphological(form or structure) unit of language with meaning)) character with 8 bit (1 byte, these are units of data) refers to cpu(central processing unit) which is the main part of a computer that processes instructions, and sends signals.