Find the first term and common difference of the arithmetic sequence whose 1025 term is -26 and 17 term is -47?
1) Oa_(1)=-3,d=1
2) Oa_(1)=1,d=-3
3) Oa_(2)=4,d=-3
4) Oa_(3)=-2b_(2)d=-47
5) Oa_(1)=-2,d=-3