In a two$-$good, two$-$consumer economy, the current allocation is such that

Alice has Marginal Utilities for goods x and y$,$ respectively, MU A

x $=6$ and

MU A

y $=3.$ Ben has Marginal Utilities MUB

x $=2$ and MUB

y $=1.$ Both

consumers have standard preferences. Choose the correct statement.

$($a$)$ The allocation is Pareto efficient.

$($b$)$ A Pareto improvement upon the original allocation is possible, and

it requires transferring both goods from Ben to Alice.

$($c$)$ A Pareto improvement upon the original allocation is possible, and

it requires transferring some x from Alice to Ben, while transferring

some y in the opposite direction.

$($d$)$ A Pareto improvement upon the original allocation is possible, and

it requires transferring some x from Ben to Alice, while transferring

some y in the opposite direction.

$($e$)$ None of the above.