With reference to the invaders in ancient India, which one of the following is the correct chronological order?
(a) Greeks-Sakas-Kushanas
(b) Greeks- Kushanas-Sakas
(c) Sakas-Greeks- Kushanas
(d) Sakas-Kushanas-Greek
(a) Alexander (Greek, 326 B.C.E.); Sakas (90 B.C.E.); Kushanas (45 C.E.)