Which of the following is the infix expression?a.A+B*Cb.#NAME?c.ABC+*d.ABC

The infix expression among the given options is a. A+B*C.

Infix notation is the common arithmetic and logical formula notation, in which operators are written infix-style between the operands they act on (e.g. 2 + 2). It is not the same as the less common prefix notation (e.g. + 2 2) or postfix notation (also known as Reverse Polish notation: 2 2 +).

So, in the given options, only a. A+B*C follows the infix notation. The operators (+ and *) are written between the operands (A, B, C).