The description on page 130 of the rains coming to Mbanta is A. Ominous and frightening.
On that page, Chinua Achebe began explaining the manner in which the rain came. He talked of how the sun gathered strength, till it seemed like a breath of fire came upon the earth.
These descriptions are ominous and frightening because they portend the arrival of an unusual weather.
Therefore, option A is correct.
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