Which of the following statements is false?

a. The thread launch policy is a value from the launch enum—either launch::async, launch::deferred or both
separated by a bitwise OR (|) operator.
b. The thread launch policy value launch::async indicates that a specified function should execute in the current
thread.
c. Function async returns an object of class template future that you can use when the thread completes execution to
obtain data returned by the function that async executes. The thread launch policy value launch::deferred indicates
that a specified function should execute in the same thread when the program uses the future object returned by
function template async to get the result.
d. To ensure that a program does not terminate until its threads terminate and to receive the results from each thread,
we call each future’s get member function. This causes the program to wait until the corresponding threads complete
execution—known as joining the threads—before executing the remaining code in main.

b. The thread launch policy value launch::async indicates that a specified function should execute in the current
thread.