A dihybrid cross of two contrasting pure-breeding organisms

A dihybrid cross of two contrasting pure-breeding
  organisms
  a. produces homozygous offspring.
  b. must produce a phenotype different from either
  pure-breeding parent.
  c. results in the disappearance of the recessive
  traits in the first generation.
  d. takes place only in the laboratory under
  precisely controlled conditions.
  e. will result in the immediate formation of another
  pure-breeding variety.

Question 2

An individual with a genetic makeup of aa BB is
  called
  a. pure-breeding.
  b. recessive.
  c. hybrid.
  d. dihybrid.
  e. heterozygous.