ভারতে PSLV প্রথম কবে ব্যবহার করা হয়েছিল? A. 1980 B. 1987 C. 1994 D. 2000

ISRO's PSLV first flew in September 1993 (PSLV-D1, which failed); its first successful flight, PSLV-D2, was in October 1994. Of the options, 1994 is the year PSLV was first used successfully.