Read the following statements regarding digital filters:(i) its operation is determined by a program stored in the processor’s memory.(ii) It cannot handle low-frequency signals accurately.(iii) It can only be changed by redesigning the circuitry.(iv) It is extremely stable with respect to both time and temperature.Which of the above statements are correct?Choose the correct answer from the code given below:

• A. (i) and (ii)
• B. (ii) and (iii)
• C. (iii) and (iv)
• D. (i) and (iv)