Executing Calculations in Multiple Threads on a Single-Core Processor Can

Executing calculations in multiple threads on a single-core processor can actually take ________ compared to simply performing them synchronously,due to the overhead of sharing one processor among the app's threads,all the other apps executing on the computer at the same time and the chores the operating system was performing.

A) less time
B) more time
C) about the same amount of time
D) much less time