The derivative of the function f is given by f'(x) = e⁻ˣcos (x²), for all real numbers x. What is the minimum value of f(x) for -1 ≤ x ≤ 1?

A) f(-1)
B) f(-0.762)
C) f(1)
D) There is no minimum value of f(x) for -1 ≤ x ≤ 1.