What tool included in Valgrind suite can Yancey use to detect memory-management related issues?

Yancey has just finished downloading the Valgrind suite to use in his application development.
Yancey is most concerned about the possibility of memory-management issues in his programs.
What tool included in Valgrind suite can Yancey use to detect memory-management related
issues?

A.
Massif

B.
Cachegrind