Why Has Pakistan's Army Built a Complex Network of Relationships

Why has Pakistan's army built a complex network of relationships with numerous jihadist terror groups, including the Taliban, and with terrorists like Osama bin Laden?

A) Their fear of India drove them to do it.
B) Jihadist terror groups are Muslim, so naturally some involvement would be unavoidable.
C) Their military leaders were often paranoid that failing to do so would evoke the anger of the people.
D) Once Pakistan had made an alliance with one terror organization, that organization threatened terror to the Pakistani people if they did not ally with more.