FILL_IN_THE_BLANK:Shortcut key for DEV-C + + format

Shortcut key for DEV-C + + format
In the windows environment, using DEV-C + + integrated development environment.
-To increase the indent, use the @ @ [a] (1) key
-To reduce the indent, use the @ @ [b] (1) key
A) `Tab`
B) `Shift` + `Tab`
C) `Ctrl` + `Tab`
D) `Alt` + `Tab`
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Note: Please fill in capital letters.







answer：Empty 1: a||
Blank 2: B||