Tangential acceleration of a particle moving on a circular path of radius 1m varies with time as sho

Tangential acceleration of a particle moving on a circular path of radius 1m varies with time as shown. The time after which total acceleration makes an angle of 〖𝟒𝟓〗^𝒐 with the velocity of particle, is (particle starts from rest)a)𝟒^(𝟏/𝟑) 𝒔 b) (𝟒/√𝟑)^(𝟏/𝟑) 𝒔 c) (𝟒√𝟑)^(𝟏/𝟑) 𝒔 d) (𝟐/√𝟑)^(𝟏/𝟑) 𝒔