If 2 \sin x + 1 \geq 0 and x ∊ [ 0,2 \\pi ] then x ∊

Correct Answer is : [0,7π6] ∪[11π6,2π]

[ 0 , { 7 \\pi }/ { 6 } ] \cup [ { 11 \\pi } /{ 6 } , 2 \\pi ]

[ { 11 \\pi } /{ 6 } , 2 \\pi ]