C also has optional keywords signed and unsigned that apply to the integral types. What do they mean? If you declare a variable "int $i",$ is it considered signed, unsigned, or neither?

Give the value of each of the following $C$ expressions as a decimal number. $($That is: if the expression was the right$-$hand side of a $C$ statement "int $k=$dots $",$ what would the value of $k$ be after that statement?$)$ All numbers are in decimal. Note that integer literal constants are interpreted as ints, i$.$e$.,$ signed, $32-$bit decimal integers, by default. $($Each part is worth $2$ points.$)$

A$.({99}^{{?}^{?}}27)4$

B$.(100$&$15),128$

C$.(130)+5$

D$.2553$

E$.-1>1$