Choose the code that is a valid example of an array operation.

Group of answer choices

firstArray $=[1,2,5,8]$;

secondArray $=[3,4,7,9]$;

newArray $=$firstArray $*$ secondArray

firstArray $=[1,2,5,8]$;

secondArray $=[3,4,7,9]$;

newArray $=$firstArray $*.$ secondArray

firstArray $=[1,2,5,8]$;

secondArray $=[3,4,7,9]$;

newArray $=$firstArray $.+$ secondArray

firstArray $=[1,2,5,8]$;

secondArray $=[3,4,7,9]$;

newArray $=$firstArray $./$ secondArray