A. Yes, it is all permitted.
D) See question above:
Can women wear jewelry on Tisha B’Av.?
A.
Poskim maintain that if possible it should be avoided, also some
Poskim opine, during
all the nine
days. (Eishel Avrohom (Butatch), Piskei Teshuvos (551).)
Rabbi
A. Bartfeld as revised by,
Horav Yaakov Hirschman,
Horav Dovid Pam, Horav Aharon Miller, Horav Chanoch Ehrentreu and
Horav Kalman Ochs Shlit'a