B.
Go to fertilityfriend.com. It's free to sign up. The extra little perks for a vip membership ($45) aren't necessary but are well worth it.
Go to Charting FAQ, and then go down near the bottom to Gender selection.
There is an unbelievable wealth of info on the site. After you chart for 2 months you should be able to determine the best time for conception for you. Everyones cycle is different so when people say to try and conceive on day 11 or 12 or whatever that is based on an average. This will let you determine based on your own cycle the best time to conceive.
Good Luck!