Please help understand the answer

Q1. Resource leveling will generally:

a. Reduce the time needed to do the project
b. Increase the total time necessary to do all the tasks
c. Reduce the over utilization of resources
d. Reduce resources to the lowest skill that is possible

I chose B, but the correct answer is C. But recource levelling will increase total time necessary, doesn't it?

Q2. What characteristic best describes the cost baseline?


a. Total budget for the project
b. Time-phased budget for the project
c. Total budget for the project including the contingency budget
d. Total budget for the project including the contingency budget and the management reserve

Isn't C correct, be defintion, cost basline is project budget plus contingency buget. But the right answer apparenlty is B. How? 

Q1) C is correct. 
Hint: PMBOK 5, Page 559, Definition of Resource leveling
 
Q2) B is correct 
Hint: PMBOK 5, Page 534, Definition of Cost Baseline