String handling operations in a programming language

Easy

In a system-monitoring application, two string variables are defined as follows:

directory ← 'user_upload '
filename ← ' photo.png'

Select the one option that shows the correct result of concatenating the variable directory with the variable filename.

$’user_upload photo.png’\text{'user\_upload\ photo.png'}$

$’user_upload photo.png’\text{'user\_upload\ \ photo.png'}$

$’user_uploadphoto.png’\text{'user\_uploadphoto.png'}$

$’User_Upload Photo.png’\text{'User\_Upload\ Photo.png'}$

String handling operations in a programming language Questions