Which statement adds 'pears' to the following dictionary?

prices $=\{\text{'}$apples$\text{'}$: $1\mathrm{.}99,$ 'oranges': $1\mathrm{.}49,$ 'kiwi': $0\mathrm{.}79\}$

$2)$

Executing the following statements produces a KeyError:

prices $=\{\text{'}$apples$\text{'}$: $1\mathrm{.}99,$ 'oranges': $1\mathrm{.}49,$ 'kiwi': $0\mathrm{.}79\}$ del prices$[\text{'}$limes$\text{'}]$

$3)$

Executing the following statements adds a new entry to the dictionary:

prices $=\{\text{'}$apples$\text{'}$: $1\mathrm{.}99,$ 'oranges': $1\mathrm{.}49,$ 'kiwi': $0\mathrm{.}79\}$ prices$[\text{'}$oranges$\text{'}]=1\mathrm{.}29$