Mr. Hartman has pledged to match the average of the last 20 donations to a local public television station if that average is greater than $50. If the average is not greater than $50, he will donate $50. The amounts of the last 20 donations are given. How much will Mr. Harman be donating? $43, $44, $91, $90, $43, $65, $59, $84, $94, $37, $37, $36, $43, $73, $89, $49, $39, $93, $29, $82

a
$61
b
$50
c
$54
d
$90