Microprocessors - Engineering

Q1:

Consider the following operation in a computer
  1. Multiplication of scalar
  2. Iversion of matrix
  3. Printing a line of 120 characters on a printer
Which of the above is a subroutine?

A 1 and 2 only

B 1 and 3 only

C 1, 2 and 3

D 2 only

ANS:C - 1, 2 and 3

No answer description is available.