Binary code can be expressed in:

(A) 0 and 1
(B) 0 and 3
(C) 2 and 1
(D) 1 and 3

🧠 Explanation:

Binary code can be expressed in **two digits: 0 and 1**. These digits represent the fundamental language of computers, where each 0 or 1 is called a bit. Binary code is used to encode data and instructions that computers can understand and process. It forms the basis of all digital computing, allowing complex information to be represented through simple combinations of these two symbols. Understanding binary code is essential for grasping how computers operate at the most basic level, making it a foundational concept in computer science and technology.