Qualcomm 7 7/8 (this quotation in dollar price would be $7.875. I want to know how to solve A-D or how to plug the numbers using inputs on BA II Plus financial calculator. Thanks.

A) Find the coupon yield

B) Find the current yield if the price quote is 97 4/3

C) Find the yield to Maturity if the price quote is 96 5/8 with 20 years to maturity

D) Find the Yield-to-Call if the price quote is 98, it can be called at 101 in 6 years.