We want to build a stochastic data model using the Maximum Likelihood Estimation (MLE). We observed the following data 10, 20, 30, 30, 60, and we suppose that the data is generated by sampling from an Exponential distribution. Our loss function is defined as L open parentheses lambda vertical line x subscript 1 comma x subscript 2 comma... x subscript n close parentheses equals begin inline style product from i equals 1 to n of lambda end style space e to the power of negative lambda x subscript i end exponent. What will be the optimal value of if we are using the log-likelihood (LLH) estimation