Identify what is unique about the following lines of JavaScript code.

let inches $=30$;

const inchMMConversion $=25\mathrm{.}4$;

let mm $=$ inchMMConversion $*$ inches;

Group of answer choices

At runtime, the variable value cannot be later changed

Numbers with decimals are not allowed in JavaScript

The value must include quotation marks

The const should be changed to let