A ; B and C are partners with a capital balances and profit sharing ratios as follows : A (20%) $3000 ;;; B (40%) $3000 ;;;C(40%)$4000 . At that date C retires and he is paid $4600 ; under revaluation approach assume all existing assets are correctly valued except a land with a book value $2500 and a fair value 3500, goodwill should be:

Select one:

a. 500

b. $1000.

c. $1500

d. 100.