Looking for trustworthy answers? Westonci.ca is the ultimate Q&A platform where experts share their knowledge on various topics. Join our Q&A platform and get accurate answers to all your questions from professionals across multiple disciplines. Discover in-depth answers to your questions from a wide network of professionals on our user-friendly Q&A platform.

Which sentence does not contain any errors in comma usage? A. In Vienna musicians first played the harpsichord but then someone invented the piano. B. In Vienna musicians first played the harpsichord, but then someone invented the piano. C. In Vienna musicians first played the harpsichord, but, then someone invented the piano. D. In Vienna musicians first played the harpsichord but, then someone invented the piano.