Combine the following sentences using a subordinate conjunction.
Esther observed the joyous look in Josh's eyes. She whirled around to look up the hill.
AEsther observed the joyous look in Josh's eyes, and she whirled around to look up the hill.
BEsther observed the joyous look in Josh's eyes; she whirled around to look up the hill.
CWhen Esther observed the joyous look in Josh's eyes, she whirled around to look up the hill.
Esther observed the joyous look in Josh's eyes. She whirled around to look up the hill.
AEsther observed the joyous look in Josh's eyes, and she whirled around to look up the hill.
BEsther observed the joyous look in Josh's eyes; she whirled around to look up the hill.
CWhen Esther observed the joyous look in Josh's eyes, she whirled around to look up the hill.