Multiple Choice $-$ Please write your answer on the line to the left of the question.

$($Questions $15-18$ refer equally to both $0$ Caml and $F$# $)$

$q,15.$ What is the resulting data type of the evaluation of the expression: $1+2=3$

a$)$ int

c$)$ int $$ int

b$)$ bool

d$)$ none $($syntax error$)$

$16.$ What is the function type of $f$ in the declaration: let $fx=x+1$

a$)$ int

c$)$ funxy

b$)$ int $$ int

d$)(x**y)$

$17.$ What is the function type of $$ in the declaration:

let $f=$ fun $xy(x+1,y+1\mathrm{.}0)$

a$)\text{'}a**\text{'}b{?}^{\text{'}}a*{*}^{\text{'}}b$

c$)$ int $$ float $$ int $*$ float

b$)$ int $*$ float $$ int $*$ float

d$)($int$,$ float$)$

$18.$ Given the OCam$\frac{l}{F}$# function: let rec $=$ function

$|[][]||x$::$xs(x,x+1)$::$+-xs|$

What does the following method call yield: $f[2$;$4$;$6]$

a$)[]$

c$)4$;$8$;$12$

b$)12$

d$)(2,3)$;$(4,5)$;$(6,7)$

$19.$ Which is not one of the eight major categories of Control Flow $($as described in Chapter $6)$

a$)$ Sequencing

d$)$ Variable declaration

b$)$ Selection

e$)$ Recursion

c$)$ Iteration

f$)$ Exception Handling