How Did the Expectations for the Vice Presidency Change Starting

How did the expectations for the vice presidency change starting with Walter Mondale?

A) Presidents are more likely to use their vice presidents as close policy advisers.
B) Vice presidents started to preside over the Senate.-Consider This: Constitutionally,the vice president is to preside over the Senate.Not since very near the Founding has this power been taken seriously,however.
C) Presidents are more likely to select ideologically moderate vice presidents to expand their electoral appeal.
D) Vice presidents started taking the lead in the budgeting process.