Identify the one false statement about the expected exposure of the USD value of assets

to a change in the USD$/$CAD exchange rate:

$($a$)$ US government bonds have zero exposure.

$($b$)$ Canadian government bonds have positive exposure.

$($c$)$ Shares in an American exporter have negative exposure.

$($d$)$ Shares in a Canadian importer have positive exposure.

$($e$)$ Shares in an American exporter have positive exposure.