单项选择题

Giventhefollowingscripts,whatoutputwouldbegenerated()usr/local/bin/scriptl!/usr/bin/kshVARl=redexportVARl=greenVARl=blue/usr/local/bin/script2ARl=yellow/usr/local/bin/script2!/bin/kshecho"Theskyis${VAR1}."
A.Theskyisred.
B.Theskyisblue.
C.Theskyisgreen.
D.Theskyisyellow.

A."
A.Theskyisred.
B.Theskyisblue.
C.Theskyisgreen.
D.Theskyisyellow.
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