What values are in result$\_$set after the following code is run?

my$\_$set $=\{1,2,3,4,5,6\}$

other$\_$set $=\{2,4,6\}$

result$\_$set $=$ other$\_$set.difference $($my$\_$set$)$

a$.\{\}$

b$.\{1,3,5\}$

c$.\{2,4,6\}$

d$.\{1,2,3,4,5,6\}$