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Que. The language accepted by the nondeterministic pushdown automaton

M= ({q0, q1, q2}, {a, b}, {a, b, z}, δ, q0, z, {q2}) with transitions
δ (q0 a, z) = { (q1 a), (q2 λ)};
δ (q1, b, a) = { (q1, b)}
δ (q1, b, b) ={ (q1 b)}, δ (q1, a, b) = { (q2, λ)}

is
a. L(abb*a)
b. {a} U L(abb*a)
c. L(ab*a)
d. {a} U L(ab*a)
Answer:{a} U L(abb*a)
nimisha :(September 11, 2019) explain
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