According to Greenhalgh$$s stage model of negotiation, which are in correct sequence?

a$.$

relationship building, information gathering, information using, bidding, closing the deal

b$.$

bidding, relationship building, information using, information gathering, closing the deal

c$.$

relationship building, information using, information gathering, bidding, closing the deal

d$.$

bidding, relationship building, information gathering, information using, closing the deal