请问这个题选什么？关于堆栈的

Question

A stack trace is       (a) only available through a typical debugger's step into feature (b) a sequence of method calls (c) a fatal error that causes a typical debugger to terminate (d) a list of variables allocated on a program's stack  

Answer 1

选b

就是函数或者方法的调用跟踪记录