What is a correct syntax to print the numbers $[3,4,5]$ from the array arr $=$ np$.$array$([1,2,3,4,5,6,7])$

a$)$ print$($arr$[2$:$6])$

b$)$ print$($arr$[2$:$5])$

c$)$ print$($arr$[2$:$4])$

d$)$ print$($arr$[3$:$6])$