Which Statement About the Context of HCI in the Following

Multiple Choice

Which statement about the context of HCI in the following is correct?

A) For a user's operation of a computer (e.g. moving a mouse) , the examination of HCI context of this activity should be focused on what she was doing right before her current operation;
B) For the activity of creating a digital budget file, the HCI context of it is the decision making activity of budget-planning, but not the time pressure for developing the budget;
C) The context of HCI consists of multiple layers, including both immediate and distant context;
D) HCI design of a computer system usually is affected by different situational context, but not variation in users.
E) The situational and physical factors in the environment that affect HCI form the complete context of HCI for a specific computer system.