Who among the following was not a member of the historic British Cabinet Mission that visited India in $1946$?

The Cabinet Mission sent to India in March $1946$ consisted of three British cabinet ministers: Lord Pethick-Lawrence (Secretary of State for India), Sir Stafford Cripps (President of the Board of Trade), and A. V. Alexander (First Lord of the Admiralty). Lord Wavell was the serving Viceroy of India at the time but was not a formal member of the visiting delegation.