In the poem “to a mouse” by robert burns, how does the speaker feel about the grain the mouse steals?

I found the missing excerpt and choices.

Read the passage.

I doubt na, whyles, but thou may thieve;
What then? poor beastie, thou maun live!
A daimen icker in a thrave
’S a sma’ request:
I’ll get a blessin’ wi’ the lave,
And never miss’t!

A. The speaker is angry about the missing grain.

B. The speaker is not concerned with the missing grain.

C. The speaker is excited about the missing grain

My B. THE SPEAKER IS NOT CONCERNED WITH THE MISSING GRAIN.

The speaker is not concerned with the missing grain because he believes that the mouse only steals in order to live and because there are a lot of grains, what the mouse stole is so negligible that it won't be missed.