The computations of basic and diluted EPS for the three months ended March 31 were as follows:


	Three Months Ended March 31,
(Millions, except per share amounts)	2022		2021
Numerator:
Basic and diluted:
Net income	$	2,099	$	2,235
Preferred dividends	(14)		(14)
Net income available to common shareholders	$	2,085	$	2,221
Earnings allocated to participating share awards (a)	(16)		(15)
Net income attributable to common shareholders	$	2,069	$	2,206
Denominator:(a)
Basic: Weighted-average common stock	757		804
Add: Weighted-average stock options (b)	1		1
Diluted	758		805

Basic EPS	$	2.73	$	2.74
Diluted EPS	$	2.73	$	2.74

(a)Our unvested restricted stock awards, which include the right to receive non-forfeitable dividends or dividend equivalents, are considered participating securities. Calculations of EPS under the two-class method exclude from the numerator any dividends paid or owed on participating securities and any undistributed earnings considered to be attributable to participating securities. The related participating securities are similarly excluded from the denominator.

(b)The dilutive effect of unexercised stock options excludes from the computation of EPS 0.1 million and 0.3 million of options for the three months ended March 31, 2022 and 2021, respectively, because inclusion of the options would have been anti-dilutive.