You are the computer technician for a small computer repair shop. A customer comes in and complains that since their friend installed a new sound card in their computer, all sounds played on the computer are choppy and of poor quality. They authorize you to fix this problem for them. What should you try first? Choose the best option(s) from those listed below.
a) Install the most recent version of the sound card's driver from the manufacturer's web site.
b) Replace the sound card with one that is known to work.
c) Replace the motherboard with one that has integrated audio.
d) Instruct the customer to use headphones instead of speakers.