Answer: i think the answer is
a. Multiple IRRs can occur only if the signs of the cash flows change more than once.
Explanation:
A type of animated character that represents a user in the virtual world, which is used to move throughout the world and interact with other characters and objects is called an <u>avatar</u>.
<h3>What is an avatar?</h3>
An avatar can be defined as a type of animated character that is designed and developed by a software developer to represent a user or player in the virtual world, which is used to move throughout the world and interact with other characters and objects.
In gaming technology and software development, an avatar is typically used to denote a user's (player's) character in the gaming world, virtual world or computer-simulated environment, either in two-dimensional (2D) or three-dimensional (3D).
Read more on avatar here: brainly.com/question/26479902
Abstraction comes from two latin words; abs which means away and trahere which mean to draw. From the meaning itself, it is to draw away something from specific objects, individuals, group, etc. In the computer world, a programmer hides all relevant data pertaining to the relevance of a data. It is done to increase efficiency and and reduce complexity.