I need help with these Project Management Questions.

1) In waterfall, according to the book, the measures of success are:

A) cost, schedule, cope

B) customer signoff

2) The project schedule that is an element of the project charter ___________.

A) contains the milestone events and/or phase-gates

B) contains a detailed list of major and minor tasks

3) Unfortunately, it is all too common for projects to go over budget and/or be completed late. What is the main reason?

A) An improperly constructed WBS

B) Too much scope creep

C) Insufficient upfront planning