The variables is an investment asset providing income at rate measured in currency A It follows the process d=d+ in the real world. Defining new variables as necessary, give the process followed by S. and the corresponding market price of risk, in:

(a) A world that is the traditional risk-neutral world for currency A

(b) A world that is the traditional risk-neutral world for currency B

(c) A world that is forward risk neutral with respect to a aro-coupon currency A bond maturing at time T

(d) A world that is forward risk neutral with respect to a am-coupon currency B bond maturing at time