3.B.
My middle one was/is definately a high needs baby. And I can't tell you how many people laughed when I'd say that. They'd say ALL babies are high needs, well no not like this.
I could never put him down as an infant. I learned to use the bathroom cradling him in one arm. He barely napped unless I was holding him, hated riding in the car, in the stroller, never used the baby swing, bouncy seat, bumbo etc. It was EXHAUSTING. He's now over two, and things have gotten much better. He finally will play by himself for awhile. But still if I go to the Bathroom, he follows me. Cook dinner he's standing by my legs. I wouldn't automatically assume your baby may have autism. He's just that personality. Read up on it. I believe another category for kids like this can be "tactile" children. Find different methods to try and calm your baby. He could also be colicky. Either way it's tough, seek out support. You need it!