\textbf{One of the values in a normal distribution is 43, and its z-score is 1.65. If the mean of the distribution is 40, what is the standard deviation of the distribution?} 
选项为:A:$$3$$  B:$$-1.82$$  C:$$0.55$$  D:$$1.82$$  E:$$-0.55$$  请回答其中一个选项.