B$1\mathrm{.}2$ isCapital$$Function Name: isCapital$$Input:$($char$)$ A letter$$Output:$($logical$)$ Logical value if the input letter is capital or not$$Description:$$Write a function called isCapital that checks if the input letter is capital. If the input$$letter is capital, output true. Otherwise, output false. You are guaranteed that your input$$will be a letter.$$Examples:$$answer$1=$ isCapital$($A$)$ answer$1=$ true$$answer$2=$ isCapital$($z$)$ answer$2=$ false$$answer$3=$ isCapital$($M$)$ answer$3=$ true MATLAB