Every customer who visited the a mall was given a gift coupon, on every purchase worth Rs. 1000, with a unique six-digit code written on it. Each code was such that- i). The first digit was non-zero.ii). All the six digits were distinct.iii). The 1st and the 6th digits added up to 9 and so do the 2 nd and 5 th digits, and also the 3rd and 4th digits. A gift was given to a customer who had two coupons with codes such that the numbers formed using the first three digits of each code were the reverse of each other. The number of coupons distributed could not have been more thanA) 504B) 729C) 432D) 648

1) 1
2) 2
3) 3
4) 4