Answer & Solution
Answer: Option B
Solution:
The first product to implement true relational algebra in a PC DBMS was dBase-II.
dBase-II was one of the early database management systems for microcomputers. It was widely used in the 1980s and played a significant role in the popularization of database systems for personal computers. While it wasn't as sophisticated as modern relational database systems like Oracle, it was a pioneer in bringing relational algebra to the PC platform.