Conservationists are translocating 250 fish (taken at random) from a lake to a smaller pond that has recently been resto

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Conservationists are translocating 250 fish (taken at random)
from a lake to a smaller pond that has recently been restored after
a chemical spill, to repopulate the pond. After two days of
translocating the fish, conservationists determined that 40 fish
have died due to being homozygous for a recessive allele at a
detoxification gene that has made the fish susceptible to residual
pollutants still left in the pond.
QUESTION:
(A) What is the allele frequency (q) of the susceptibility
allele in the lake fish population?
(B) What percentage of the surviving fish in the pond are
carriers of the recessive allele?