Geometric Brownian Motion $($GBM$)$ is a type of:

$($A$)$ All of the answers.

$($B$)$ Deterministic process with a constant future value.

$($C$)$ Continuous$-$time diffusion process commonly used in finance.

$($D$)$ Method for solving the Kolmogorov forward equation.

$($E$)$ Discrete$-$time jump process for stock prices.