When Providing a Non-Thermal Ultrasound Treatment Over an Acute Injury

When providing a non-thermal ultrasound treatment over an acute injury to 1^st metatarsal phalangeal joint in which the patient has Raynaud's phenomena, what would be the best application technique to use?

A) Underwater application in warm water to avoid the adverse reaction
B) Direct contact using a large transducer sized head because of the keratine layer on the plantar surface of the foot
C) Gel pad application over the joint area, being sure to coat both sides with ultrasound gel
D) Combination electrical stimulation and ultrasound to modulate the acute pain
E) Underwater application in cold water to address the swelling