The Stability Of ${ }_{6}^{11} \mathrm{C}$ With Respect to Alpha, Beta-Plus, and Beta-Minus Decay Is to to Alpha

The stability of ${ }_{6}^{11} \mathrm{C}$ with respect to alpha, beta-plus, and beta-minus decay is to be determined. The following atomic masses in amu are known:
${ }_{2}^{4} \mathrm{He}$ 4.002603

${ }_{4}^{7} \mathrm{He}$ 7.016928

${ }_{5}^{11} \mathrm{~B}$ 11.009305

${ }_{6}^{11} \mathrm{C}$ 11.011433

${ }_{7}^{11} \mathrm{~N}$ 11.026742

The ${ }_{6}^{11} \mathrm{C}$ nuclide is

A) not subject to alpha, beta-plus, or beta-minus decay.
B) subject to alpha decay only.
C) subject to beta-plus decay only.
D) subject to beta-minus decay only.
E) subject to beta-plus or beta-minus decay, but not to alpha decay.