A) \[120{}^\circ C\text{ }and\text{ }60\text{ }minutes\]
B) \[60-70{}^\circ C\text{ }and\text{ }30\text{ }minutes\]
C) \[70{}^\circ C\text{ }and\text{ }60\text{ }minutes\]
D) \[80{}^\circ C\text{ }and\text{ }30\text{ }minutes\]
Correct Answer: B
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