Which of the following 4GLs invented at IBM and subsequently adopted by ANSI and ISO as the standard language for managing structured data?

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Which of the following 4GLs invented at IBM and subsequently adopted by ANSI and ISO as the standard language for managing structured data?

A. SQL
B. PROLOG
C. C
D. JAVA

Explanation: C & JAVA are third generation languages(3GLs) whereas PROLOG is a 5GL.