Silkworms

[lokerrt]

I had 10 silkworm cocoons. Wiki says they turn into random gender moths if left in a container for some time, but mine all turned female.

Options are:

a) Wiki is wrong, they always turn female.
b) Game does one roll for all cocoons in a container, so I need to put all eggs into different containers.
c) I was just very, very unlucky.

Can anyone please tell me which option is correct?

[DDDsDD999]

C)

[lokerrt]

C)

Damn.

Thanks.