What is the minimun number of iterations (n) needed to rsuch that f(xₙ) <= 1x10⁻⁵ when finding a zero in the function f(x) = x³ + 3x² - 1 using the Newton method with an initial value of x₀ = 0.5

a. 4
b. 2
c. 6
d. 5
e. 1
f. 3