Consider the following two classes.

A $25-$line code segment reads as follows. Line $1$: public class Dog. Line $2$: open brace. Line $3$: public void act, open parenthesis, close parenthesis. Line $4$: open brace. Line $5$: System, dot, out, dot, print, open parenthesis, open double quote, run, space, close double quote, close parenthesis, semicolon. Line $6$: eat, open parenthesis, close parenthesis, semicolon. Line $7$: close brace. Line $8$: public void eat, open parenthesis, close parenthesis. Line $9$: open brace. Line $10$: System, dot, out, dot, print, open parenthesis, open double quote, eat, space, close double quote, close parenthesis, semicolon. Line $11$: close brace. Line $12$: close brace. Line $13$: public class Under Dog extends Dog. Line $14$: open brace. Line $15$: public void act, open parenthesis, close parenthesis. Line $16$: open brace. Line $17$: super, dot, act, open parenthesis, close parenthesis, semicolon. Line $18$: System, dot, out, dot, print, open parenthesis, open double quote, sleep, space, close double quote, close parenthesis, semicolon. Line $19$: close brace. Line $20$: public void eat, open parenthesis, close parenthesis. Line $21$: open brace. Line $22$: super, dot, eat, open parenthesis, close parenthesis, semicolon. Line $23$: System, dot, out, dot, print, open parenthesis, open double quote, bark, space, close double quote, close parenthesis, semicolon. Line $24$: close brace. Line $25$: close brace.

Assume that the following declaration appears in a class other than Dog.

Dog fido $=$ new UnderDog $()$ ;

What is printed as a result of the call fido.act$()?$

Responses

run eat

run eat

run eat sleep

run eat sleep

run eat sleep bark

run eat sleep bark

run eat bark sleep

run eat bark sleep

Nothing is printed due to infinite recursion.