Here, copied from Live Right 4 Your Type, is the list of the beans you can eat as a B on the Eat Right food plan. Please note that LENTILS are NOT on the list.
BEANS AND LEGUMES: 4 – 6 Servings per WEEK
Serving size: 1 cup cooked – Men and Women
BENEFICIAL: Kidney beans, navy beans, lima beans
NEUTRAL: Cannellini beans, October beans (also called cranberry beans), Fava beans, Green beans, Jicama, Great Northern beans, Red beans, White beans
Note: You can have soy beans (edamame) but nothing made of soy, like tofu or soy milk or “fake meats”
Hope this helps. It is an answer to only your one question.
The link Lola provided for you enables you to look up any individual food to see if it is Beneficial, neutral or an avoid for you. However, if you can afford to buy the Live Right 4 Your type book it has a complete section on all foods by blood type. I keep that book handy at all times.